Small diameter diamond saw blade for cutting marble, granite, concrete, refractory materials, ceramics and other brittle temper material. Cutting equipment is usually portable cutting machine, grinder, individuals have the product efficiency to the desktop machine, such as tiles blades. Basis for the production of small GUSHI abrasive flap wheels diameter diamond saw blade grounding strange Suri into green sheets and welding pieces.
Sintered slices of raw produce high performance, value related to the high prices, but in the use of easily thrown head separatist course, litter, saw the matrix beans sectional, saw blade is not sharp and so on.
Sintered saw blade roughly divided into: sub tooth saw blade, blade-shaped surrounding succession, the turbine blade region have state type blade, turbo status of tooth blade The same day as the GUSHI circular blades chip welding laser welding are low the product Laser welded saw.. the price expensive, expensive laser welding facility the cause is, the matrix I expensive, but also the necessary head cold after sintering, sintered saw blade raw produce absolute performance pay is low, but the laser welding of the blade tip and matrix strength is higher , with the use of long life, less prone to broken busted, insurance performance advantages....
Abrasive Tools
2014年3月22日星期六
2014年3月2日星期日
Some reasons concrete diamond blades wear
(1) diamond size: diamond particle size used in the range of 30/35 to 60/80. The more hard rock, should be selected with a finer granularity. Because under the same pressure conditions, the more detailed the GUSHI turbo diamond blade more diamond sharp cut in favor of hard rock. Further, the general requirements of a large-diameter blade cutting efficiency high, the particle size should be selected with a coarser, such as 30/40, 40/50; lower small-diameter blade cutting efficiency requires a smooth cross-section of rock cutting, should to a smaller particle size, such as 50/60, 60/80.
(2) Segment concentration: the so-called diamond concentration, refers to the density distribution in the working layer of diamond carcass (ie, the weight of the diamond contained within the unit area). "Norms" provides the carcass per cubic centimeter work containing 4.4 kt diamond, its GUSHI carbide saw blades concentration was 100%, with 3.3 karats of diamonds, its concentration was 75%. Represents the volume concentration of the volume occupied by the number of diamond agglomerates, and that, where a concentration of 1/4 volume of the total volume of diamond is 100%. Increasing the concentration of diamond is expected to prolong the life of the blade, i.e., reduced because of the increased average concentration of each piece of diamond cutting forces suffered. However, increasing the depth of the blade will increase the cost, so there is a concentration of the most economical and the concentration increases with the shear rate increases VS. (3) the hardness of head binders: In general, the higher the hardness of the binder, the stronger its wear resistance. Thus, when a large rock cutting abrasive, hardness should be high binding agent; when cutting soft rock material, the hardness of the binding agent should be low; when sawing hard and abrasive rock large, the hardness of the binding agent should be moderate . (4) force effects, temperature effects and grinding damage: cutting stone diamond saw blades in the process will be subject to centrifugal force, cutting power, cutting hot alternating load effect.
As the force and temperature effects caused by diamond saw blade worn donate damage.
Force effect: the cutting process, the saw blade to be GUSHI carbide drill bits subjected to an axial force and tangential force. Because of the force acting radially and in the circumferential direction, so that the wavy blade axially, radially dish-shaped. Both can cause deformation of the rock section is not straight, stone waste more time sawing noise, vibration intensified, resulting in diamond caking early damage, reducing blade life. Temperature effect: the traditional theory: the effect of temperature on the blade process mainly manifested in two aspects: First, cause agglomeration of diamond graphite; Second, causing thermal Ili diamond and diamond particles resulting from the carcass of premature loss . New research indicates that: the heat generated during the cutting process the incoming primary agglomeration. Arc temperature is not high, generally between 40 ~ 120 ℃. The abrasive grinding points, but a higher temperature, generally between 250 ~ 700 ℃. The average temperature of the coolant only reduce the arc zone, the temperature of the grains was less affected. Such temperature does not result in charring of graphite, but will occur between the abrasive friction properties and the workpiece changes, and to thermal stress between diamond and additives, which led to a fundamental failure mechanisms diamond bend of. Research shows that the temperature effect is to make the maximum impact factors blade breakage.
(2) Segment concentration: the so-called diamond concentration, refers to the density distribution in the working layer of diamond carcass (ie, the weight of the diamond contained within the unit area). "Norms" provides the carcass per cubic centimeter work containing 4.4 kt diamond, its GUSHI carbide saw blades concentration was 100%, with 3.3 karats of diamonds, its concentration was 75%. Represents the volume concentration of the volume occupied by the number of diamond agglomerates, and that, where a concentration of 1/4 volume of the total volume of diamond is 100%. Increasing the concentration of diamond is expected to prolong the life of the blade, i.e., reduced because of the increased average concentration of each piece of diamond cutting forces suffered. However, increasing the depth of the blade will increase the cost, so there is a concentration of the most economical and the concentration increases with the shear rate increases VS. (3) the hardness of head binders: In general, the higher the hardness of the binder, the stronger its wear resistance. Thus, when a large rock cutting abrasive, hardness should be high binding agent; when cutting soft rock material, the hardness of the binding agent should be low; when sawing hard and abrasive rock large, the hardness of the binding agent should be moderate . (4) force effects, temperature effects and grinding damage: cutting stone diamond saw blades in the process will be subject to centrifugal force, cutting power, cutting hot alternating load effect.
As the force and temperature effects caused by diamond saw blade worn donate damage.
Force effect: the cutting process, the saw blade to be GUSHI carbide drill bits subjected to an axial force and tangential force. Because of the force acting radially and in the circumferential direction, so that the wavy blade axially, radially dish-shaped. Both can cause deformation of the rock section is not straight, stone waste more time sawing noise, vibration intensified, resulting in diamond caking early damage, reducing blade life. Temperature effect: the traditional theory: the effect of temperature on the blade process mainly manifested in two aspects: First, cause agglomeration of diamond graphite; Second, causing thermal Ili diamond and diamond particles resulting from the carcass of premature loss . New research indicates that: the heat generated during the cutting process the incoming primary agglomeration. Arc temperature is not high, generally between 40 ~ 120 ℃. The abrasive grinding points, but a higher temperature, generally between 250 ~ 700 ℃. The average temperature of the coolant only reduce the arc zone, the temperature of the grains was less affected. Such temperature does not result in charring of graphite, but will occur between the abrasive friction properties and the workpiece changes, and to thermal stress between diamond and additives, which led to a fundamental failure mechanisms diamond bend of. Research shows that the temperature effect is to make the maximum impact factors blade breakage.
2014年1月16日星期四
Alloy saw blade grinding at many factors can not be ignored when
1, the base body deformation, inconsistent thickness, a large hole tolerances, there is a problem when the substrate congenital defects, no matter the kind of device type, there are grinding errors. Substrate deformation big on two side angle bias, matrix hole large diametrical jump bias; substrate thickness is inconsistent after corner and edge front corner of bias, such as the existence of differential accumulation of work too, saw the quality and accuracy of severely affected .
2, grinding teeth grinding effects on the structure of the alloy saw blade grinding machine structure and assembly that is good or bad, the market about two types of models: one is floating in GUSHI core bits for concrete Germany Palmer type, class models with vertical grinding, the advantages of using hydraulic stepless all sports, all the feed system using V-rail and ball screw work, grinding or arm using the jog feed retraction rewind, adjust the center fuel tank clip, flexible support sheet Reliable, accurate positioning of teeth dial, automatic blade positioning center firmly centered, arbitrary angle adjustment, cooling rinse reasonable man-machine interface, high precision grinding, plain grinding machine design is reasonable; II, which is currently horizontal, such as Taiwan and Japan Machine type, mechanical transmission gears and mechanical gap exists dovetail slide accuracy, low clip smooth performance with film center adjustment difficult, pulling teeth institution or poor reliability, flat sides and around the corner is not a central grinding, producing large deviations , difficult to control the angle of mechanical wear disaster ensure accuracy.
3, welding factor when welding alloys for moderate large deviations affect the precision grinding, grinding pressure while causing great pressure on the small side, rear corner also produce the above factors, the welding angle difference, inevitable human factors, all of When the grinding wheel, and other factors have an unavoidable impact. 4, wheel width on the quality and size, the choice of wheel running-gold films, pay attention to wheel size, granularity is too coarse grinding wheel produced traces wheel grinding selected fine grain size is less easy to plug, easy to burn knife. Wheel diameter and thickness is based alloy wheel width width or the length of each side of the tooth and non-alloy case may be, is not a front or corner after corner as wheel size available, can be any different tooth grinding, must be GUSHI carbide tipped saw blade targeted to choose a suitable size wheel.
5, grinding feed rate, alloy saw blade grinding entirely good or bad decision grinding feed rate, generally alloy saw blade feed rate 6 mm / s can not overspeed value, which should be in the 20 teeth per minute , exceeding speed is too large, will have serious knife harmartoma or burn alloy wheel produces concave surface affect the precision grinding waste into the grinding wheel 20 teeth per minute.
6, grinding feed rate, the choice of wheel size on the amount of feed has a very important significance, suggested the use of general grinding wheel 180 # 240 # 240 # to choose the most, 280 #, 280 # to opt out 320 #, or to adjust feed rate. 7, grinding centers, all of the saw blade grinding and the substrate as the center, rather than the blade center, surface grinding center to get it out, horn, front corner with a processing center can not be sharpened a blade, grinding three blade center processes can not be ignored. Still careful observation side angle grinding alloy thickness, thickness change with different grinding center, regardless of how the alloy thickness, side grinding wheel centerline when welding position should be maintained in a straight line, otherwise the impact of cutting angle difference.
8, dial tooth institutions can not be ignored, no matter how the structure and grinding, teeth dial coordinate system involves sharpening the accuracy of design quality, acupressure dial tooth tooth surface in a reasonable position in the transfer machines, but do not move but GUSHI abrasive grinding wheels also its The key, when back teeth, jaw set aside should be flexible and reliable.
9, Clips institutions: institutions clip stable and reliable labor solid, quality is the main part of the Brothers, the Brothers clip any organization can not have the slightest loosening, whether serious side grinding teeth bias control.
10, grinding stroke, regardless of any part of the saw blade grinding, grinding, grinding stroke is very important, beyond the general requirements for wheel quit working 1 mm or 1 mm is appropriate, otherwise the impact on other teeth.
11 program options: Brothers General equipment coarse and fine grinding choice of three different programs, depending on the product requirements of the selection process when the final recommendations of the use of grinding mill rake angle.
12, coolant grinding teeth grinding fluid that is good or bad decision given, when a large amount of cobalt tungsten grinding wheel diamond powder, not timely wheel washing and cleaning of the tool surface pores, resulting in surface grinding tool can not grind finish, there is not enough to cool it will burn alloys.
2, grinding teeth grinding effects on the structure of the alloy saw blade grinding machine structure and assembly that is good or bad, the market about two types of models: one is floating in GUSHI core bits for concrete Germany Palmer type, class models with vertical grinding, the advantages of using hydraulic stepless all sports, all the feed system using V-rail and ball screw work, grinding or arm using the jog feed retraction rewind, adjust the center fuel tank clip, flexible support sheet Reliable, accurate positioning of teeth dial, automatic blade positioning center firmly centered, arbitrary angle adjustment, cooling rinse reasonable man-machine interface, high precision grinding, plain grinding machine design is reasonable; II, which is currently horizontal, such as Taiwan and Japan Machine type, mechanical transmission gears and mechanical gap exists dovetail slide accuracy, low clip smooth performance with film center adjustment difficult, pulling teeth institution or poor reliability, flat sides and around the corner is not a central grinding, producing large deviations , difficult to control the angle of mechanical wear disaster ensure accuracy.
3, welding factor when welding alloys for moderate large deviations affect the precision grinding, grinding pressure while causing great pressure on the small side, rear corner also produce the above factors, the welding angle difference, inevitable human factors, all of When the grinding wheel, and other factors have an unavoidable impact. 4, wheel width on the quality and size, the choice of wheel running-gold films, pay attention to wheel size, granularity is too coarse grinding wheel produced traces wheel grinding selected fine grain size is less easy to plug, easy to burn knife. Wheel diameter and thickness is based alloy wheel width width or the length of each side of the tooth and non-alloy case may be, is not a front or corner after corner as wheel size available, can be any different tooth grinding, must be GUSHI carbide tipped saw blade targeted to choose a suitable size wheel.
5, grinding feed rate, alloy saw blade grinding entirely good or bad decision grinding feed rate, generally alloy saw blade feed rate 6 mm / s can not overspeed value, which should be in the 20 teeth per minute , exceeding speed is too large, will have serious knife harmartoma or burn alloy wheel produces concave surface affect the precision grinding waste into the grinding wheel 20 teeth per minute.
6, grinding feed rate, the choice of wheel size on the amount of feed has a very important significance, suggested the use of general grinding wheel 180 # 240 # 240 # to choose the most, 280 #, 280 # to opt out 320 #, or to adjust feed rate. 7, grinding centers, all of the saw blade grinding and the substrate as the center, rather than the blade center, surface grinding center to get it out, horn, front corner with a processing center can not be sharpened a blade, grinding three blade center processes can not be ignored. Still careful observation side angle grinding alloy thickness, thickness change with different grinding center, regardless of how the alloy thickness, side grinding wheel centerline when welding position should be maintained in a straight line, otherwise the impact of cutting angle difference.
8, dial tooth institutions can not be ignored, no matter how the structure and grinding, teeth dial coordinate system involves sharpening the accuracy of design quality, acupressure dial tooth tooth surface in a reasonable position in the transfer machines, but do not move but GUSHI abrasive grinding wheels also its The key, when back teeth, jaw set aside should be flexible and reliable.
9, Clips institutions: institutions clip stable and reliable labor solid, quality is the main part of the Brothers, the Brothers clip any organization can not have the slightest loosening, whether serious side grinding teeth bias control.
10, grinding stroke, regardless of any part of the saw blade grinding, grinding, grinding stroke is very important, beyond the general requirements for wheel quit working 1 mm or 1 mm is appropriate, otherwise the impact on other teeth.
11 program options: Brothers General equipment coarse and fine grinding choice of three different programs, depending on the product requirements of the selection process when the final recommendations of the use of grinding mill rake angle.
12, coolant grinding teeth grinding fluid that is good or bad decision given, when a large amount of cobalt tungsten grinding wheel diamond powder, not timely wheel washing and cleaning of the tool surface pores, resulting in surface grinding tool can not grind finish, there is not enough to cool it will burn alloys.
2014年1月3日星期五
Diamond grinding machine defect inspection
To our knowledge diamond grinder before installation must undergo a rigorous inspection , cracks and other defects in the diamond grinding machine is definitely not allowed to install and use . Please read on.
( 1 ) diamond grinding machine tag checks. Diamond grinder no markings or unclear, unable to verify , confirm the characteristics of a diamond diamond grinding machine grinding machine , regardless of whether there is defective , are not available ; ( 2 ) diamond grinding machine defect inspection . Its inspection methods are visual and carbide saw blades sound checks : ① direct visual inspection with the naked eye or with other appliances inspect the diamond surface grinder for cracks or damage and other defects ;
② sound check , also known as percussion test , mainly for internal defects in diamond grinders , inspection method is to use small wooden hammer percussion diamond grinder . Normal diamond grinders crisp sound, sound dull , hoarse , indicating that there are problems ; ( 3 ) the strength of diamond rotary grinder test. The same number of diamond grinding machine models should be turning intensity random testing without strength test batch of diamond grinding machine installation is prohibited .
How to make a diamond diamond grinding wheel wear slower in our daily lives has become so widespread , that how can you slow diamond grinding wheel wear often , you know? If you do not know to metal grinding wheel give with Xiaobian look at it .
Select the diamond grinding wheel hardness general principle is : the processing of soft metal , in order not to make premature loss of abrasive , then use a hard wheel. Wear resistance and long life . Diamond grinding wheel ratio up to 3500-5500 , a hundred times higher than normal corundum grinding wheel , 3-5 times higher than ordinary diamond wheel . When processing hard metal , in order to make timely blunt grit off, thereby exposing new abrasive grains with sharp edges ( ie, self-sharpening ) , use a soft wheel. Or because the soft material in the grinding wheel abrasive wear is slow work , without departing too early ; latter is because the grinding of hard materials , abrasive wear of the grinding wheel work faster, require faster updated. High tile cutting blades efficiency, good overall economic efficiency . Grinding sharp, small grinding force , diamond grinding wheel dressing cycle length , less the amount of dressing , long replacement time ; long life cycle, grinding ratio , getting a better economy, use good shape retention , without regular replace the wheel and wheel dressing , saving time and improving working conditions conducive to machining operations .
( 1 ) diamond grinding machine tag checks. Diamond grinder no markings or unclear, unable to verify , confirm the characteristics of a diamond diamond grinding machine grinding machine , regardless of whether there is defective , are not available ; ( 2 ) diamond grinding machine defect inspection . Its inspection methods are visual and carbide saw blades sound checks : ① direct visual inspection with the naked eye or with other appliances inspect the diamond surface grinder for cracks or damage and other defects ;
② sound check , also known as percussion test , mainly for internal defects in diamond grinders , inspection method is to use small wooden hammer percussion diamond grinder . Normal diamond grinders crisp sound, sound dull , hoarse , indicating that there are problems ; ( 3 ) the strength of diamond rotary grinder test. The same number of diamond grinding machine models should be turning intensity random testing without strength test batch of diamond grinding machine installation is prohibited .
How to make a diamond diamond grinding wheel wear slower in our daily lives has become so widespread , that how can you slow diamond grinding wheel wear often , you know? If you do not know to metal grinding wheel give with Xiaobian look at it .
Select the diamond grinding wheel hardness general principle is : the processing of soft metal , in order not to make premature loss of abrasive , then use a hard wheel. Wear resistance and long life . Diamond grinding wheel ratio up to 3500-5500 , a hundred times higher than normal corundum grinding wheel , 3-5 times higher than ordinary diamond wheel . When processing hard metal , in order to make timely blunt grit off, thereby exposing new abrasive grains with sharp edges ( ie, self-sharpening ) , use a soft wheel. Or because the soft material in the grinding wheel abrasive wear is slow work , without departing too early ; latter is because the grinding of hard materials , abrasive wear of the grinding wheel work faster, require faster updated. High tile cutting blades efficiency, good overall economic efficiency . Grinding sharp, small grinding force , diamond grinding wheel dressing cycle length , less the amount of dressing , long replacement time ; long life cycle, grinding ratio , getting a better economy, use good shape retention , without regular replace the wheel and wheel dressing , saving time and improving working conditions conducive to machining operations .
2013年12月24日星期二
Electroplated diamond cutting discs role
Resin bond diamond wheel is mainly used for parallel carbide measuring tools, cutting tools , molds and other surface grinding , cylindrical grinding , bore grinding, grinding and also used as a cut man bronze molding bonded diamond grinding wheel is mainly used for hard brittle non-metallic materials , such as glass , ceramics, ferrites , precious stones and other cylindrical and planar processing , but also for the electrolytic grinding carbide products . Diamond grinding wheel series can be divided stone drill bits into : parallel (P) | parallel arcs band wheel (PH) | single bevel (PDX) | double hypotenuse (PSX) |
The cup-shaped grinding wheel cutting disc (B) | bowl-shaped grinding wheel (BW2) | butterfly wheel (D1) | Single concave wheel (PDA) | Double-sided concave grinding wheel (PSA) and the special specifications according to customer requirements can be kind to map build processing .
Diamond grinding wheel used in the electronics industry , the semiconductor industry and other materials, slotting or cut diamond wheels for carbide main bar , ferrite , magnetic materials as well as glass , silicon, resistors , crystal and other cutting . DTHX60-1500.15-1.210-755 8 material blade diamond particles / μm Applications glass + silicone resin, glass cutter knife communication elements 20-30 30-45 inkjet print head quartz resin knife 30-40SAW tantalum / lithium niobate resin knife 15 -30SAW ferrite resin knife VCR heads 6-9 3-6 piezoelectric ceramic resin knife diamomd core drill bits or 30 sensors alumina resin knife 30-88 - sapphire resin knife
45-53 - Resin Knife Features :
1 , almost any material can be cut .
2 , has a unique self-sharpening function , no repair knife.
3 , the blade can be manufactured within φ200mm .
4, the thinnest blade is 0.10mm.
5, the cutting discs with a tough , high precision, ultra-thin and other characteristics, can be domestic or imported precision cut dicing the integrated silicon chip.
6 , the service life of more than 10,000 lines.
Main purpose : for slotting or cutting hard and brittle materials .
Tip: Thickness φ100mm resin knife Maximum spindle speed selection and knife related. When using resin knife, spindle speed should be within 16000-40000r/min , the Heat do not exceed the specified concrete grinding wheel maximum speed , otherwise the blade will automatically body . To choose high-power spindle speed spindle speed in determining when another speeding , they should also consider the material hardness , soft material dicing cut high spindle speed gestures hard materials, low -cut plan than the spindle speed , and cut into thick material planning .
The cup-shaped grinding wheel cutting disc (B) | bowl-shaped grinding wheel (BW2) | butterfly wheel (D1) | Single concave wheel (PDA) | Double-sided concave grinding wheel (PSA) and the special specifications according to customer requirements can be kind to map build processing .
Diamond grinding wheel used in the electronics industry , the semiconductor industry and other materials, slotting or cut diamond wheels for carbide main bar , ferrite , magnetic materials as well as glass , silicon, resistors , crystal and other cutting . DTHX60-1500.15-1.210-755 8 material blade diamond particles / μm Applications glass + silicone resin, glass cutter knife communication elements 20-30 30-45 inkjet print head quartz resin knife 30-40SAW tantalum / lithium niobate resin knife 15 -30SAW ferrite resin knife VCR heads 6-9 3-6 piezoelectric ceramic resin knife diamomd core drill bits or 30 sensors alumina resin knife 30-88 - sapphire resin knife
45-53 - Resin Knife Features :
1 , almost any material can be cut .
2 , has a unique self-sharpening function , no repair knife.
3 , the blade can be manufactured within φ200mm .
4, the thinnest blade is 0.10mm.
5, the cutting discs with a tough , high precision, ultra-thin and other characteristics, can be domestic or imported precision cut dicing the integrated silicon chip.
6 , the service life of more than 10,000 lines.
Main purpose : for slotting or cutting hard and brittle materials .
Tip: Thickness φ100mm resin knife Maximum spindle speed selection and knife related. When using resin knife, spindle speed should be within 16000-40000r/min , the Heat do not exceed the specified concrete grinding wheel maximum speed , otherwise the blade will automatically body . To choose high-power spindle speed spindle speed in determining when another speeding , they should also consider the material hardness , soft material dicing cut high spindle speed gestures hard materials, low -cut plan than the spindle speed , and cut into thick material planning .
2013年12月9日星期一
Excellent characteristics of single crystal diamond meet the precision
Carbon atoms, a single diamond crystal, the crystal structure of the highest density of metal atom such as axial face-centered cubic crystal. Diamond crystal connected between the carbon atoms grinding cup wheels bond to sp3 hybridized covalent bond, with a strong binding force, stability and direction. The unique crystal structure of diamond in nature it has the highest hardness, stiffness, refractive index and thermal conductivity, and high wear resistance, corrosion resistance and chemical stability.
Excellent characteristics of single crystal diamond meet the precision and ultra-precision cutting tool material for most of the requirements and is ideal for precision cutting tool materials. Diamond without internal grain boundaries uniform crystal structure so that the tool cutting edge can theoretically reach the atomic level flatness and sharpness, cut thin cutting ability, high precision, cutting force is small; their high hardness and good wear resistance resistance, corrosion resistance and diamomd core drill bits chemical stability can ensure that the tool has a long life, so that it can continue for a long time of cutting, the tool wear can be reduced because of the precision of the parts; its high thermal conductivity can be reduced and the cutting temperature parts thermal deformation.
Single crystal diamond tool in the machining field has an important position, is widely used as a mirror, missiles and rockets navigation gyro, computer hard disk substrate accelerator electron gun, such as ultra precision mirror of parts. Can also be used in the manufacture of single crystal diamond eye, brain surgeon's scalpel, thin slicing knives and 4 inch saw blades other bio-medical tools. In addition, single-crystal diamond tool in civilian products processing applications are becoming increasingly widespread, from watch parts, aluminum pistons, jewelry and other processing to pens, high-gloss mirror decorative signs and non-ferrous metal parts processing, its application has entered the machining a variety of areas.
Excellent characteristics of single crystal diamond meet the precision and ultra-precision cutting tool material for most of the requirements and is ideal for precision cutting tool materials. Diamond without internal grain boundaries uniform crystal structure so that the tool cutting edge can theoretically reach the atomic level flatness and sharpness, cut thin cutting ability, high precision, cutting force is small; their high hardness and good wear resistance resistance, corrosion resistance and diamomd core drill bits chemical stability can ensure that the tool has a long life, so that it can continue for a long time of cutting, the tool wear can be reduced because of the precision of the parts; its high thermal conductivity can be reduced and the cutting temperature parts thermal deformation.
Single crystal diamond tool in the machining field has an important position, is widely used as a mirror, missiles and rockets navigation gyro, computer hard disk substrate accelerator electron gun, such as ultra precision mirror of parts. Can also be used in the manufacture of single crystal diamond eye, brain surgeon's scalpel, thin slicing knives and 4 inch saw blades other bio-medical tools. In addition, single-crystal diamond tool in civilian products processing applications are becoming increasingly widespread, from watch parts, aluminum pistons, jewelry and other processing to pens, high-gloss mirror decorative signs and non-ferrous metal parts processing, its application has entered the machining a variety of areas.
2013年12月3日星期二
Factors Affecting the efficiency and lifetime of diamond saw blades
Factors affecting the efficiency and life of the diamond saw with particle size , concentration, binding agent , and the hardness of the diamond sawing process parameters and the like . It has cut the number of blades can be wire-speed , cutting feed rate and concentration .
First, the cutting parameters:
( 1 ) Blade Speed: In practice , the diamond cup grinding wheel line speed diamond saw blade being equipment conditions , and restrictions were sawing blade quality stone before nature. From the best blade life and cutting efficiency , the linear velocity of the blade should be selected according to the different nature of the stone . When cutting granite , the blade may be within the selected line speed 25m ~ 35m / s range. For high quartz content and difficult cutting granite , remove the saw blade line speed limit is appropriate. In the production of granite tiles, using a diamond saw blade smaller diameter , the line speed up to 35m / s.
( 2 ) cutting depth : the depth is involved in diamond cutting wear , effectively sawing , saw the forces and the nature of the important parameters are affected by sawing stone . In general , when a high line speed diamond saw blade should be selected for cutting of small depth , from Concrete saw blades the current technology , the cutting depth of the diamond can choose between 1mm ~ 10mm . Usually large diameter saw blade when cutting granite blocks , cutting depth can be controlled within 1mm ~ 2mm between the feed rate should be reduced at the same time . When a large diamond saw blade line speed , you should select a large depth of cut. But in performance and tool strength saw the extent permitted , should try to take a greater concentration of cutting cutting to improve cutting efficiency. When the surface of the processing requirements of a small depth of cut should be used .
( 3 ) Feed speed : Feed speed Jibei stone cutting feed rate . Its size affect the rate of cutting , the blade and the cutting force by the heat dissipation area . Its value should be based on the nature of the stone sawing selected . In general, the sawing softer stone, such concrete saw blades as marble, may be appropriate to increase the feed rate, if the feed rate is too low , more conducive to improving cutting rates. Sawing fine structure , relatively homogeneous granite , may be appropriate to increase the feed rate, if the feed rate is too low , diamond blade easily be polished . But while sawing UNEVEN coarse structure of granite , feed rate should be reduced , otherwise it will cause the blade vibration resulting in reduced fragmentation of diamond cutting rates. Granite cutting feed rate is generally within the range of the selected 9m ~ 12m/min .
First, the cutting parameters:
( 1 ) Blade Speed: In practice , the diamond cup grinding wheel line speed diamond saw blade being equipment conditions , and restrictions were sawing blade quality stone before nature. From the best blade life and cutting efficiency , the linear velocity of the blade should be selected according to the different nature of the stone . When cutting granite , the blade may be within the selected line speed 25m ~ 35m / s range. For high quartz content and difficult cutting granite , remove the saw blade line speed limit is appropriate. In the production of granite tiles, using a diamond saw blade smaller diameter , the line speed up to 35m / s.
( 2 ) cutting depth : the depth is involved in diamond cutting wear , effectively sawing , saw the forces and the nature of the important parameters are affected by sawing stone . In general , when a high line speed diamond saw blade should be selected for cutting of small depth , from Concrete saw blades the current technology , the cutting depth of the diamond can choose between 1mm ~ 10mm . Usually large diameter saw blade when cutting granite blocks , cutting depth can be controlled within 1mm ~ 2mm between the feed rate should be reduced at the same time . When a large diamond saw blade line speed , you should select a large depth of cut. But in performance and tool strength saw the extent permitted , should try to take a greater concentration of cutting cutting to improve cutting efficiency. When the surface of the processing requirements of a small depth of cut should be used .
( 3 ) Feed speed : Feed speed Jibei stone cutting feed rate . Its size affect the rate of cutting , the blade and the cutting force by the heat dissipation area . Its value should be based on the nature of the stone sawing selected . In general, the sawing softer stone, such concrete saw blades as marble, may be appropriate to increase the feed rate, if the feed rate is too low , more conducive to improving cutting rates. Sawing fine structure , relatively homogeneous granite , may be appropriate to increase the feed rate, if the feed rate is too low , diamond blade easily be polished . But while sawing UNEVEN coarse structure of granite , feed rate should be reduced , otherwise it will cause the blade vibration resulting in reduced fragmentation of diamond cutting rates. Granite cutting feed rate is generally within the range of the selected 9m ~ 12m/min .
2013年11月28日星期四
Kim saw blade grinding must be noted at the time
Factor in the use of gold saw blade grinding to note about the : 1 , coolant grinding teeth grinding fluid that is good or bad decision . When a large amount of tungsten partridge grinding , diamond grinding wheel powder, not timely flushing and cleaning of the grinding wheel tool surface pores, resulting in surface grinding tool can not grind finish, there diamond blades is not enough cooling will burn alloys. 2, the grinding mechanism for grinding teeth affected. Alloy saw blade grinding machine structure and assembly that is good or bad , about the current market two types of models: one is floating in Germany Seoul ink types. The type with vertical grinding off , all the advantages of using hydraulic stepless movement , all the feed system using V -rail and ball screw work , grinding or arm using the jog feed retraction rewind, adjust the fuel tank clip heart, flexible and reliable support piece , pulling teeth accurate positioning, strong self-centering blade positioning heart , any angle adjustment , cooling rinse reasonable man-machine interface , high precision grinding off , pure grinder rational design ; II , which is currently horizontal such as Taiwan and Japan models, the presence of mechanical transmission gears and mechanical clearance dovetail slide accuracy, low steady performance clips , adjust the difficulty heart support piece , pulling teeth institution or poor reliability, after the plane left and right sides and an angle not mind grinding cut , resulting in large deviation angle difficult to control, mechanical wear disaster ensure accuracy. 3 , welding factor. Welding alloys deviation big impact precision grinding , grinding pressure while causing great pressure on the small side , rear corner also produce the above factors, the welding angle difference , inevitable human factors , all of the grinding wheel, and other factors produce an unavoidable impact . 4 , wheel width on the quality and size . Optional wheel run- gold films , pay attention to wheel size , granularity is too coarse grinding wheel produced traces wheel grinding selected fine grain size is less easy to plug , easy to burn knife. Wheel diameter and thickness is based alloy wheel width or different tooth width and the length of each side alloy case may be , not a corner after corner or front wheel can be any size as different tooth grinding , must be targeted to choose a diamond cut off wheel suitable Specifications wheel. 5 , grinding feed rate. Alloy blade grinding entirely good or bad decision grinding feed rate , generally alloy saw blade feed rate from 0.5 to 6 mm / s can not exceed this value that should be within 20 teeth per minute per minute exceeding 20 tooth feed rate is too large , it will have a serious knife tumor or burn alloy wheel produces concave surface affect the accuracy of the waste grinding wheel . 6 , grinding feed rate , the choice of wheel size on the amount of feed has very important significance. General Wheel suggested the use of 180 # 240 # 240 # to most, the choice not to choose 280 # 280 # to 320 # , or to adjust the feed rate. 7 , grinding heart. All grinding the blade and the substrate for the heart, rather than with the blade of the heart, the heart does not get out surface grinding , horn , front Dressing plates corner with a processing center can not be sharpened a blade , blade grinding three processes Heart can not be ignored . Grinding side angle still careful observation alloy thickness , thickness change with different grinding heart , no matter how the alloy thickness , surface grinding wheel center line should be kept with the welding position in a straight line , otherwise the impact of cutting angle difference . 8 , pulling teeth institutions can not be ignored . Regardless of how the structure of any grinding , pulling teeth to coordinate accuracy Brothers Design quality , acupressure pulling teeth tooth surface in a reasonable position at the time of transfer machines, and not with the move is extremely critical , when back teeth , pulling teeth jaws should flexible and reliable.
2013年11月24日星期日
Field of use of diamond tools
Diamond is the hardest, so in stone, building materials processing, diamond cutting tool is a good tool. Diamond tools such as diamond saw blades and wear-resistant materials in non-ferrous metal processing applications, has excellent adaptability. Use the following detailed description of the field of diamond tools.
When using diamond tools, users concrete diamond blades have two options: one is polycrystalline diamond (PCD), the other is a relatively new chemical vapor deposition (CVD) diamond.
Early use of proven performance
Polycrystalline diamond has a natural diamond hardness, strength and abrasion resistance, but does not damage the sensitivity of natural diamond. It is at high temperature, the polymerization of the synthetic diamond particles. In the process, while the polycrystalline particles is integrally formed is bonded to a cemented carbide substrate on to improve the mechanical strength and impact resistance.
PCD is applicable to high-speed cutting of aluminum, is particularly suitable is required to achieve good surface roughness of the main case, it is in the processing of high wear resistance, and exhibits excellent performance. Typically, PCD recommended for cutting high silicon aluminum alloy, but also for brass, copper, bronze, and carbide processing. Processes used include turning, boring, profiling, grooving, milling and hole processing.
As the chemical reaction between the diamond and iron, in general, does not apply to the processing of ferrous metals PCD material. However, it can deal with the processing of bi-metal material, comprising a combination of aluminum and iron included. For example: a car parts suppliers in the processing of aluminum and cast iron cylinder bi-metal body with a diameter of 305mm wafer type face milling cutter, corner radius 2.36mm, with repair knife, cutting 304.8m/min, feed 0.10 mm / tooth, depth of cut 5mm, processing up to the 5000 cylinder block, indexable inserts only need one.
By the mass production industry, primarily grinding cup wheels in the automotive industry increasing push aluminum processing speeds. Meanwhile, car manufacturers in order to reduce weight and reduce costs, is on the use of metal matrix composites evaluated, and such materials must be processed by PCD. He said: "Such material can not be processed using carbide tools."
Polycrystalline product manager, said that although the PCD development achievements have been giving a very deep impression,
PCD tools in terms of scope and production efficiency, have brought many benefits to the process. Although the diamond is the hardest available materials, the material characteristics and toughness problems still further. One factor to improve the toughness of PCD is plus cobalt is not directed it into a random arrangement between the diamond grains. Further, the cemented carbide substrate of the diamond abrasive layer can also act as a mechanical support, thereby increasing the impact resistance, and ease of manufacture of brazed tool.
Another benefit of the PCD, the existing series of various grades have been able to meet any need to use non-ferrous metal processing. In general, the fine particles are less wear diamond for materials processing require very high surface roughness of the occasion; diamond sand paper particles in general as generic brands machining; coarse diamond for roughing the special anti-wear material, but the surface roughness of less demanding place.
Bright future
At present, many production sites do not take full advantage of the diamond. The reason is that a lot of speed and torque tools are not sufficient to ensure the efficient functioning of the tool.
In addition to mechanical problems, there is a difficult problem is to convince people to produce the factory, do not just stare at diamond (PCD or CVD diamond) set the initial price, but to see it brings cost savings and improved performance benefits. You can make a diamond tool than conventional operation (depending on machine performance may be) at a higher speed, thereby enhancing the volume of output. Meanwhile, fewer tool changes. Assume diamond carbide than 50 times to 100 times higher life, you do not often stop it.
When using diamond tools, users concrete diamond blades have two options: one is polycrystalline diamond (PCD), the other is a relatively new chemical vapor deposition (CVD) diamond.
Early use of proven performance
Polycrystalline diamond has a natural diamond hardness, strength and abrasion resistance, but does not damage the sensitivity of natural diamond. It is at high temperature, the polymerization of the synthetic diamond particles. In the process, while the polycrystalline particles is integrally formed is bonded to a cemented carbide substrate on to improve the mechanical strength and impact resistance.
PCD is applicable to high-speed cutting of aluminum, is particularly suitable is required to achieve good surface roughness of the main case, it is in the processing of high wear resistance, and exhibits excellent performance. Typically, PCD recommended for cutting high silicon aluminum alloy, but also for brass, copper, bronze, and carbide processing. Processes used include turning, boring, profiling, grooving, milling and hole processing.
As the chemical reaction between the diamond and iron, in general, does not apply to the processing of ferrous metals PCD material. However, it can deal with the processing of bi-metal material, comprising a combination of aluminum and iron included. For example: a car parts suppliers in the processing of aluminum and cast iron cylinder bi-metal body with a diameter of 305mm wafer type face milling cutter, corner radius 2.36mm, with repair knife, cutting 304.8m/min, feed 0.10 mm / tooth, depth of cut 5mm, processing up to the 5000 cylinder block, indexable inserts only need one.
By the mass production industry, primarily grinding cup wheels in the automotive industry increasing push aluminum processing speeds. Meanwhile, car manufacturers in order to reduce weight and reduce costs, is on the use of metal matrix composites evaluated, and such materials must be processed by PCD. He said: "Such material can not be processed using carbide tools."
Polycrystalline product manager, said that although the PCD development achievements have been giving a very deep impression,
PCD tools in terms of scope and production efficiency, have brought many benefits to the process. Although the diamond is the hardest available materials, the material characteristics and toughness problems still further. One factor to improve the toughness of PCD is plus cobalt is not directed it into a random arrangement between the diamond grains. Further, the cemented carbide substrate of the diamond abrasive layer can also act as a mechanical support, thereby increasing the impact resistance, and ease of manufacture of brazed tool.
Another benefit of the PCD, the existing series of various grades have been able to meet any need to use non-ferrous metal processing. In general, the fine particles are less wear diamond for materials processing require very high surface roughness of the occasion; diamond sand paper particles in general as generic brands machining; coarse diamond for roughing the special anti-wear material, but the surface roughness of less demanding place.
Bright future
At present, many production sites do not take full advantage of the diamond. The reason is that a lot of speed and torque tools are not sufficient to ensure the efficient functioning of the tool.
In addition to mechanical problems, there is a difficult problem is to convince people to produce the factory, do not just stare at diamond (PCD or CVD diamond) set the initial price, but to see it brings cost savings and improved performance benefits. You can make a diamond tool than conventional operation (depending on machine performance may be) at a higher speed, thereby enhancing the volume of output. Meanwhile, fewer tool changes. Assume diamond carbide than 50 times to 100 times higher life, you do not often stop it.
2013年11月11日星期一
Practical of diamond tools
Diamond tool is mainly used for a variety of non-ferrous metals such as aluminum turning , copper, magnesium and its alloys , tungsten carbide and wear strong fiber reinforced plastic materials, metal matrix composites, wood and other non-metallic materials . When cutting speed, feed concrete diamond blades rate and depth of cut depends on processing conditions and the hardness of the workpiece material . Synthetic polycrystalline diamond compact (PDC) properties and applications close PCD tool , mainly used in non-ferrous metals , tungsten carbide , ceramics, non-metallic materials ( plastic , hard rubber, carbon rod , wood, cement products, etc. ) , composite materials such as cutting, gradual replacement carbide cutting tools . Because edge polishing pads the diamond particles bonded to ask some residual metal and graphite , in which the bonding metal or showed coalescence vein -like distribution state will reduce tool wear and life.
In addition there is a metal residue solvent , solvent metal in direct contact with the diamond surface . Lower (PDC) oxidation resistance and tool heat resistance , the cutting tool is not stable enough. Thick Diamond Tool preparation process is complex, because of the low melting point metals and their alloys and diamond has a high interfacial energy between . Diamond is difficult to be generally low melting point PCD grinding wheel solder alloy infiltration. Weldability poor , difficult to produce complex geometry tool , it can not be applied TDF welding tool in high-speed milling . Diamond- coated tools can be applied to high-speed machining , because in addition to diamond coated tools have excellent mechanical properties, diamond coating process can be prepared any complex shape cutters for high speed machining aerospace materials such as aluminum alloy and refractory processing of non- metallic material such as graphite electrodes.
In addition there is a metal residue solvent , solvent metal in direct contact with the diamond surface . Lower (PDC) oxidation resistance and tool heat resistance , the cutting tool is not stable enough. Thick Diamond Tool preparation process is complex, because of the low melting point metals and their alloys and diamond has a high interfacial energy between . Diamond is difficult to be generally low melting point PCD grinding wheel solder alloy infiltration. Weldability poor , difficult to produce complex geometry tool , it can not be applied TDF welding tool in high-speed milling . Diamond- coated tools can be applied to high-speed machining , because in addition to diamond coated tools have excellent mechanical properties, diamond coating process can be prepared any complex shape cutters for high speed machining aerospace materials such as aluminum alloy and refractory processing of non- metallic material such as graphite electrodes.
2013年11月7日星期四
Three main diamond cutting tool materials
Three main diamond cutting tool materials --- PCD, CVD synthetic single crystal diamond thick and performance comparison results: PCD welding, mechanical grinding and the highest fracture toughness, wear resistance and edge quality centered, worst corrosion cbn grinding wheels resistance; CVD thick best corrosion resistance, mechanical grinding resistance, edge quality, fracture toughness and abrasion resistance centered weldability worst; synthetic single crystal diamond cutting edge quality, anti- the best wear resistance and corrosion resistance, weldability, mechanical cutting resistance and fracture toughness of the worst. Currently, high-speed cutting diamond tool (2500 ~ 5000m / min) aluminum an ideal tool material, but in the high-speed cutting steel and steel alloys Shique wear faster, the wear mechanism was mainly due to carbon and iron with greater affinity effect, especially at high temperatures the diamond easily react with the iron, so it is not suitable for cutting steel and its alloys.
We have zero defect management fibre discs concept, through consistently. All along, the pursuit of perfect quality, it is also constantly improve the service system, care for your every need, through a sales and service network throughout the country to provide you with professional services. Diamond tool material is divided into single-crystal diamond (there are two kinds of natural and man-made, natural single crystal diamond expensive part is single crystal synthetic diamond substitute), synthetic polycrystalline diamond (PCD) and synthetic polycrystalline diamond and carbide composite blade (PCD / CC) and CVD diamond.
Single crystal diamond
Single crystal diamond cutting tool must be sds hammer drill bits used for large particles (mass greater than 0.1g, the best path length not less than 3mm), mainly used in surface roughness, geometry, high precision and dimensional accuracy requirements of precision and ultra precision machining applications fields.
We have zero defect management fibre discs concept, through consistently. All along, the pursuit of perfect quality, it is also constantly improve the service system, care for your every need, through a sales and service network throughout the country to provide you with professional services. Diamond tool material is divided into single-crystal diamond (there are two kinds of natural and man-made, natural single crystal diamond expensive part is single crystal synthetic diamond substitute), synthetic polycrystalline diamond (PCD) and synthetic polycrystalline diamond and carbide composite blade (PCD / CC) and CVD diamond.
Single crystal diamond
Single crystal diamond cutting tool must be sds hammer drill bits used for large particles (mass greater than 0.1g, the best path length not less than 3mm), mainly used in surface roughness, geometry, high precision and dimensional accuracy requirements of precision and ultra precision machining applications fields.
2013年10月29日星期二
monocrystalline diamond tool application
the crystal structure of the highest density of metal atom such as axial face-centered cubic crystal. Diamond crystal connected between the carbon atoms bond to sp3 hybridized covalent bond, with a strong binding force, stability and direction. The unique crystal structure of diamond in nature it has the highest hardness, stiffness, refractive index and thermal conductivity, and high wear resistance, corrosion resistance and core drill bits chemical stability.
Excellent characteristics of single crystal diamond meet the precision and ultra-precision cutting tool material for most of the requirements and is ideal for precision cutting tool materials. Diamond without internal grain boundaries uniform crystal structure so that the tool cutting edge can theoretically reach the atomic level flatness and core bits for concrete sharpness, cut thin cutting ability, high precision, cutting force is small; their high hardness and good wear resistance resistance, corrosion resistance and chemical stability can ensure that the tool has a long life, so that it can continue for a long time of cutting, the tool wear can be reduced because of the precision of the parts; its high thermal conductivity can cbn grinding wheels be reduced and the cutting temperature parts thermal deformation.
Single crystal diamond tool in the machining field has an important position, is widely used as a mirror, missiles and rockets navigation gyro, computer hard disk substrate accelerator electron gun, such as ultra precision mirror of parts. Can also be used in the manufacture of single crystal diamond eye, brain surgeon's scalpel, thin slicing knives and other bio-medical tools.
Excellent characteristics of single crystal diamond meet the precision and ultra-precision cutting tool material for most of the requirements and is ideal for precision cutting tool materials. Diamond without internal grain boundaries uniform crystal structure so that the tool cutting edge can theoretically reach the atomic level flatness and core bits for concrete sharpness, cut thin cutting ability, high precision, cutting force is small; their high hardness and good wear resistance resistance, corrosion resistance and chemical stability can ensure that the tool has a long life, so that it can continue for a long time of cutting, the tool wear can be reduced because of the precision of the parts; its high thermal conductivity can cbn grinding wheels be reduced and the cutting temperature parts thermal deformation.
Single crystal diamond tool in the machining field has an important position, is widely used as a mirror, missiles and rockets navigation gyro, computer hard disk substrate accelerator electron gun, such as ultra precision mirror of parts. Can also be used in the manufacture of single crystal diamond eye, brain surgeon's scalpel, thin slicing knives and other bio-medical tools.
2013年10月22日星期二
ost-effective way to improve the grinding wheel
the best way to improve the cost of: grinding the core of the sheet is not part of the cutting action in a poor quality and low price instead of a secondary abrasive, abrasive cutting quality full performance, lower manufacturing costs.Sheet wheel performance depends largely on the merits of using abrasive quality, good quality abrasives, grinding wheels, high grade, and in the more expensive price. As the domestic high-grade bauxite green concrete blades resource depletion, a variety of raw materials and coal prices in mid-rise, coupled with energy saving the environment forced shut down, corundum prices are rising fast, from time to time will be in short supply. How rational use abrasives, improve market competitiveness, is the most important enterprises grinding technology considerations.Best approach is to not participate in the core sheet wheel portion of the cutting action of poor quality with low prices instead of secondary abrasive, abrasive cutting quality full performance, lower manufacturing costs. This approach resin bolts and large diameter cylindrical grinding wheel resin grinding wheel has been widely used. For thin grinding wheel, since the intermediate screening, the polishing pads for granite bottom and the top to separate the feed, if the external and the core are stepwise feeding, in the process to implement quite difficult, is still only vision in the future, if successful, cost reduction, profit improvement , on sheet wheel manufacturing is undoubtedly a far-reaching "technological revolution."Compare prices now wear suitable strategy for various consumer groups, in accordance with abrasive made of different grades of abrasive products, the best abrasive used in most need sheet wheel, avoiding production of low-grade abrasive grinding wheels with high-grade, as far as possible best use, cost-effective in improving the premise, a great effort for each grade of the product have done "extreme."High-grade sheet wheel stable, targeted, reproducible production has generally adopted a sand, special cup grinding wheels products and even to use zirconium corundum, calcined alumina abrasive and post-processing. The market is dominated by imported products, most cost-effective production of high sheet is not high, not discrimination, targeted not strong, still need further research and development efforts.If you use an ordinary sheet wheel sand, cost is very low, almost no profit, now commonly used two sand instead. The so-called two sand, refers to those standards is not abrasive, aluminum oxide content of about 80% of corundum, good quality two sands, also known as a second, different origin, different batches of two sand quality fluctuation range large. Sand production sheet wheel with two main problems is the wheel performance is unstable, different batches of the same recipe abrasives, grinding wheels produced poor reproducibility, good times and bad
2013年10月11日星期五
The chemical composition of diamond and graphite are carbon
scientists call "homogeneous much like variant", there are also known as "allotropes." From this call may know that they have the same "quality", but the "shape" or "sex" is different, and there diamond cup grinding wheel is a world of difference, diamond is the hardest substance, while graphite is one of the softest material. We all know that with graphite pencil and clay ratio and made of graphite as many soft, with a "B" indicates, more than the hard clay mixed with "H" represents. Mineralogist with Mohs hardness expressed relative hardness, diamond is 10, while graphite is only a Mohs hardness. Their hardness big difference lies in their internal structure is very different.
Graphite carbon atoms are within the layered arrangement, only around one carbon atom with three carbon atoms attached, form a carbon to carbon hexagonal ring, an infinite number of a layer of hexagons. Contact force between the layers is weak, and contact layer is firmly three ceramic tile saw carbon atoms, by the force between layers so it is easy to slip, which is very soft to write graphite causes.
Diamond carbon atoms are within the "skeleton" shaped arrangement of three-dimensional space, one carbon atom is surrounded by four carbon atom, thus forming a three-dimensional space in a skeleton-like, this structure is uniform in all directions, contact force, very strong coupling, Therefore, the diamond has a high hardness properties.
Graphite and diamond hardness vary so much, but people still want to be able to get the diamond synthetic method, because the nature of graphite (carbon) reserves are very rich. But to make the bandsaw blades carbon graphite are arranged into a diamond like carbon, is not so easy. The late eighteenth century, people began to look for ways of synthesis, until the mid-century. 1938 Rossini scholar thermodynamic calculation, laid the theoretical foundation of synthetic diamond, calculated to make the graphite into a diamond, at least at 15,000 atmospheres, 1500 degrees Celsius under high temperature conditions can, to built 50-60 years to achieve the above conditions Instrument. Graphite 5-6 million atmospheres ((5-6) × 103MPa) and 1000 to 2000 ° C temperatures, then the metallic iron, cobalt, nickel and the like as catalyst, can graphite into diamond.
Graphite carbon atoms are within the layered arrangement, only around one carbon atom with three carbon atoms attached, form a carbon to carbon hexagonal ring, an infinite number of a layer of hexagons. Contact force between the layers is weak, and contact layer is firmly three ceramic tile saw carbon atoms, by the force between layers so it is easy to slip, which is very soft to write graphite causes.
Diamond carbon atoms are within the "skeleton" shaped arrangement of three-dimensional space, one carbon atom is surrounded by four carbon atom, thus forming a three-dimensional space in a skeleton-like, this structure is uniform in all directions, contact force, very strong coupling, Therefore, the diamond has a high hardness properties.
Graphite and diamond hardness vary so much, but people still want to be able to get the diamond synthetic method, because the nature of graphite (carbon) reserves are very rich. But to make the bandsaw blades carbon graphite are arranged into a diamond like carbon, is not so easy. The late eighteenth century, people began to look for ways of synthesis, until the mid-century. 1938 Rossini scholar thermodynamic calculation, laid the theoretical foundation of synthetic diamond, calculated to make the graphite into a diamond, at least at 15,000 atmospheres, 1500 degrees Celsius under high temperature conditions can, to built 50-60 years to achieve the above conditions Instrument. Graphite 5-6 million atmospheres ((5-6) × 103MPa) and 1000 to 2000 ° C temperatures, then the metallic iron, cobalt, nickel and the like as catalyst, can graphite into diamond.
2013年10月8日星期二
affect the life of the main factors diamond saw what
Impact efficiency and life of saw blade sawing factors are process parameters and the diamond particle size, density, hardness and other binders. It has cut the number of blades can be wire-speed, concentration Plate Compactor and cutting feedrate.One, cutting parameters(1) blade speed: In practice, the line speed diamond saw blades by equipment conditions, saw the quality and the nature of the restrictions before sawing stone. From the optimum blade life and cutting efficiency, it should be selected depending on the nature of the stone saw blade speed. Sawing granite, the blade speed at 25m ~ 35m / s within the selected range. For high quartz content and tile cutting blades difficult cutting granite, remove the blade speed limit is appropriate. Granite tiles in the production, the use of smaller diameter diamond saw blade, the line speed can reach 35m / s.(2) Cutting Depth: diamond cutting depth is related to wear, effective cutting, saw cutting force conditions and the nature of the important parameters of stone. Generally speaking, when the circular blades line speed diamond saw blade is high, should be selected for cutting of small depth, from the current technology, the cutting depth of the diamond can choose between 1mm ~ 10mm. Usually with a large diameter saw blade cutting granite blocks, the cutting depth can be controlled within 1mm ~ 2mm between the feed rate should be reduced at the same time. When the line speed diamond saw blade is large, a large cutting depth should be selected. But in performance and tool strength saw the extent permitted, should try to take a greater depth of cut for cutting to improve cutting efficiency. When the machined surface when requested, should be used small depth of cut.(3) Feed speed: Cutting feedrate incurs stone feed rate. Its size sawing rate impact, the force and the cutting blade heat dissipation area. Its value should be based on the nature of the selected cutting stone.
2013年9月12日星期四
The introduction of the surface roughness of diamond grinding wheel
What is a diamond grinding wheel surface roughness it, the following is a specific description:
The machined parts diamond grinding wheel surface , there will always be some macro and micro geometry errors , part on the surface of microscopic diamond wheel geometry error is determined by masonry saw blades the parts on the surface of a series of tiny diamond wheel spacing valley formed , these tiny undulating valley called the degree of surface roughness of diamond wheel parts .
Surface roughness is a measure of diamond wheel diamond grinding wheel surface machining precision parts is an important indicator of the surface roughness of diamond wheel parts will affect edge polishing pads the level of two parts in contact with the surface of the diamond wheel friction , motion surface wear , the bonding surface sealing , with a surface of the working precision , the fatigue strength of the rotary member , the appearance of parts , etc., even on the part of diamond grinding wheel has an impact on the corrosion resistance of the surface . Diamond grinding wheel abrasive concentration on superhard materials grinding effect to a certain extent , the concentration is too high or too low can cause premature loss of tct saw blades the abrasive , the diamond grinding wheel wear and tear costs, so the choice of abrasive concentration is also critical when step. Experimental results show that the coarse grinding , higher concentrations can be selected to increase the effective abrasive grains per unit area number , improve processing efficiency and diamond grinding wheel during low concentrations should be selected . Under normal circumstances, when the abrasive concentration can be selected coarse 100-150 % , when the concentration of abrasive grinding can use 75-100 percent.
The machined parts diamond grinding wheel surface , there will always be some macro and micro geometry errors , part on the surface of microscopic diamond wheel geometry error is determined by masonry saw blades the parts on the surface of a series of tiny diamond wheel spacing valley formed , these tiny undulating valley called the degree of surface roughness of diamond wheel parts .
Surface roughness is a measure of diamond wheel diamond grinding wheel surface machining precision parts is an important indicator of the surface roughness of diamond wheel parts will affect edge polishing pads the level of two parts in contact with the surface of the diamond wheel friction , motion surface wear , the bonding surface sealing , with a surface of the working precision , the fatigue strength of the rotary member , the appearance of parts , etc., even on the part of diamond grinding wheel has an impact on the corrosion resistance of the surface . Diamond grinding wheel abrasive concentration on superhard materials grinding effect to a certain extent , the concentration is too high or too low can cause premature loss of tct saw blades the abrasive , the diamond grinding wheel wear and tear costs, so the choice of abrasive concentration is also critical when step. Experimental results show that the coarse grinding , higher concentrations can be selected to increase the effective abrasive grains per unit area number , improve processing efficiency and diamond grinding wheel during low concentrations should be selected . Under normal circumstances, when the abrasive concentration can be selected coarse 100-150 % , when the concentration of abrasive grinding can use 75-100 percent.
2013年9月11日星期三
blade grinding develop some of the trends
An alloy saw blade when grinding a number of factors can not be ignored, the matrix deformation, inconsistent thickness, bore tolerances big. Congenital defects of the base there is a problem, no matter the kind of graphics device, there is grinding errors. Matrix deformation on the two side angle bias; matrix inconsistent thickness right sand paper rear corner and edge front corner of bias, such as the existence of cumulative tolerance is too large, the quality and accuracy of the blade severely affected. 2, grinding teeth grinding effect on the structure. Alloy saw blade grinding machine structure and assembly is good or bad, about two types of models currently on the market: one is floating in Germany Seoul ink types. The type with vertical grinding off, all the advantages of hydraulic stepless movement, all of the feed system using V-shaped guide rail and ball screw work, grinding or big arm with slow feed forward, rewind retraction, Clips cylinder regulator center support piece flexible and reliable, accurate positioning pulling teeth, blade positioning center firmly self-centering, arbitrary angle adjustment, cooling flush reasonable, man-machine interface, high precision grinding off, pure grinder rational design; Type II, which is currently Horizontal such as Taiwan and Japan models, the presence of mechanical transmission gears and mechanical clearance dovetail slide accuracy, stable performance low clip, branched piece center adjustment difficult, pulling teeth institution or poor reliability, flat two sides, left and right rear corner is not a central mill cut, resulting in large deviation angle difficult to control, mechanical wear disaster ensure accuracy. 3, welding factor. Welding Alloys for moderate deviations and impact grinding precision, resulting in a large pressure while grinding, while pressure is small, the posterior horn of the same generation of the above factors, welding angle difference, human factors will inevitably have on the grinding wheel, etc. factors produce unavoidable impact. 4, wheel width affect the grinding stone quality and size. Optional wheel running gold films, note wheel size, granularity is too coarse grinding wheel produced traces wheel easy to plug the optional fine granularity grinding less easy to burn knife. Grinding wheel diameter and length width thickness is based alloy and alloy tooth width or different each face the situation, not a corner after corner or front wheel specifications are the same as any different from tooth grinding, must be targeted to choose a suitable Specifications Wheel. 5, grinding feed speed. Alloy saw blade grinding entirely good or bad decision grinding feed rate, generally alloy saw blade feed rate at from 0.5 to 6 mm / s can not exceed this value should be 20 per minute teeth, the ultra in every minute 20 tooth feed rate is too large, it will have serious knife tumors or burning alloy wheel impact generated convex and concave surface precision grinding wheel wasted. 6, grinding feed rate, the choice of wheel size on the amount of feed has an extremely important significance. General grinding wheel recommendation to use 180 # 240 # 240 # to use at most an opt 280 # 280 # to 320 #, or to adjust the feed rate. 7, grinding center. All grinding the blade and the substrate as the center, rather than with the blade as the center, get it out flat grinding center, rear angle, rake angle with a processing center can not be sharpened a saw blade, saw blade grinding three processes the center can not be ignored. Side angle grinding alloy thickness is still careful observation, the thickness change with different grinding center, regardless of how the alloy thickness, the grinding surface grinding wheel center line and the welding position to be maintained in a straight line, or have a poor impact angle cutting. 8, pulling teeth institutions can not be ignored. Regardless of how the structure of any grinding, pulling teeth designed to coordinate accuracy sharpening design quality, machine adjustment pulling teeth acupressure reasonable position in the tooth surface, and not with the move is extremely critical, back teeth when pulling teeth claw should flexible and reliable. 9, Clips institutions: institutions firmly clip stable and reliable quality is the main part of the Brothers, the Brothers when any clip institutions can not have the slightest loosening, or grinding teeth deviation seriously out of control. 10, grinding itinerary. Regardless of wet tile saw any part of the blade grinding, grinding grinding stroke is very important, generally require grinding wheel or exit out of the workpiece 1 mm 1 mm is appropriate, or tooth blade produces two faces. 11, the program options: Sharpening generally provided with a rough and fine grinding three different programs options, depending on the degree of demand for product selection, and finally recommended when grinding rake angle grinding process. 12, coolant grinding teeth grinding fluid that is good or bad decision. Partridge produce large amounts of tungsten grinding, diamond grinding wheel powder, not timely flushing and cleaning of grinding wheel tool surface pores, causing the surface of the grinding tool can not grind finish, there is not enough cooling will burn alloys.
2013年9月6日星期五
Blade Maintenance How to maintain the blade
1 blade if not used immediately, it should be flat or use the hole to hang up, the blade can not be stacked horizontally with other items or foot, and pay attention to moisture and corrosion.
(2) When the blade is no cutting wheels longer sharp cutting surface roughness must be promptly re-grinding. Grinding can not change the original angle, and destruction balancing.
3 blade diameter correction, positioning hole machining, etc., must be carried out by the factory. If the processing is bad, will affect the product effect, and may be dangerous, reaming in principle can not exceed the original diameter 20mm, so as not to affect the balance of stress.
4 of alloy wheel selection.
1) resin bond diamond grinding wheel bond strength is weak, it can be self-sharpening, grinding, and not blocked, high grinding efficiency, small grinding force, low grinding temperature, the disadvantage is poor wear resistance, abrasive wear and diamond bandsaw blades tear , it is not suitable for heavy duty grinding.
2) vitrified diamond grinding wheel wear resistance and superior binding capacity of the resin binder, sharp cutting, grinding, high efficiency, easy to heat and clogging, thermal expansion is less easy to control precision, shortcomings coarse grinding surface, higher costs .
3) metal-bonded diamond wheels combined with high strength, wear resistance, low wear, long life, grinding, low cost, can withstand a greater load, but sharp poor, easy to plug.
4) abrasive particle size on the grinding wheel cutting the amount of blockage and have a certain influence, coarse sand and fine sand compared to the depth of cut large abrasive cutting edge wear increases, whereas wheel easy to plug.
5) Wheel hardness greater impact on wet granite pads congestion, high hardness, high thermal conductivity wheel is not conducive to surface cooling, but is conducive to improve the precision and durability. 6) Wheel selection is an important characteristic concentration, its grinding efficiency and processing costs have a significant impact, affect the efficiency of the concentration is too low, whereas abrasive easy to fall off, but the best combination of optimum concentration range.
(2) When the blade is no cutting wheels longer sharp cutting surface roughness must be promptly re-grinding. Grinding can not change the original angle, and destruction balancing.
3 blade diameter correction, positioning hole machining, etc., must be carried out by the factory. If the processing is bad, will affect the product effect, and may be dangerous, reaming in principle can not exceed the original diameter 20mm, so as not to affect the balance of stress.
4 of alloy wheel selection.
1) resin bond diamond grinding wheel bond strength is weak, it can be self-sharpening, grinding, and not blocked, high grinding efficiency, small grinding force, low grinding temperature, the disadvantage is poor wear resistance, abrasive wear and diamond bandsaw blades tear , it is not suitable for heavy duty grinding.
2) vitrified diamond grinding wheel wear resistance and superior binding capacity of the resin binder, sharp cutting, grinding, high efficiency, easy to heat and clogging, thermal expansion is less easy to control precision, shortcomings coarse grinding surface, higher costs .
3) metal-bonded diamond wheels combined with high strength, wear resistance, low wear, long life, grinding, low cost, can withstand a greater load, but sharp poor, easy to plug.
4) abrasive particle size on the grinding wheel cutting the amount of blockage and have a certain influence, coarse sand and fine sand compared to the depth of cut large abrasive cutting edge wear increases, whereas wheel easy to plug.
5) Wheel hardness greater impact on wet granite pads congestion, high hardness, high thermal conductivity wheel is not conducive to surface cooling, but is conducive to improve the precision and durability. 6) Wheel selection is an important characteristic concentration, its grinding efficiency and processing costs have a significant impact, affect the efficiency of the concentration is too low, whereas abrasive easy to fall off, but the best combination of optimum concentration range.
2013年8月23日星期五
aligned with the saw table
1. Please alloy blades vertically hanging drying rack, be sure to avoid the damp places, do not place alloy blade flat on the floor or on a shelf, flat will lead alloy blade deformation.
2. When used, do not exceed the stone drill bits specified maximum speed.
3. When used, it must take protective mask, gloves, helmets, safety shoes, safety glasses.
4. The installation Alloy saw, must make sure the saw table properties, uses, it is best to read the manual saw table to avoid loading the wrong, causing an accident.
5. The installation Alloy saw, must first check whether there is a split alloy saw blade, distort, fill level, lost teeth and other phenomena, and then install it.
6. Superhard alloy sharp serrated blade, prohibit the collision, fall to the ground, you must gently.
7. alloy saw blade, you must confirm whether the center hole of the blade firmly fixed on the saw table flange, a gasket must be good washer; Then, gently turn the hand to promote the saw blade, confirmed Whether the eccentric shaking.
8. Must alloy saw cutting direction indicated by the arrow direction of rotation aligned with the saw table. Do not install the opposite direction, the direction will lead out the wrong tooth installed.
9. Preroll time: Change alloy saw before use preroll one minute, let saw table into the working state, can be cut.
10. Before cutting, you must confirm whether the brick saws use of alloy saw the material being cut and consistent.
11. Cutting material must be gently cut into the normal operation of the blade material is prohibited Forced straining hard to push.
12. Ban reversed, inverted transfer lead out tooth, dangerous.
13. Use abnormal sound heard and saw abnormal shaking, cut not usually, immediately stop operation, looking for anomalies reason, the replacement blades.
14. Cutting, the prevention of sudden stop of the blade material is cut intermediate. Cutting was stopped at the middle can cause jagged off, blade deformation.
15. After cutting please wipe the sanding belt rust oil. Prevent blade rust.
16. When not sharp serrated teeth grinding again, you must get the manufacturers specify abrasive grinding technology, shop or store to grind, otherwise it will destroy the original jagged angles affect cutting accuracy and shorten the life of the blade.
2. When used, do not exceed the stone drill bits specified maximum speed.
3. When used, it must take protective mask, gloves, helmets, safety shoes, safety glasses.
4. The installation Alloy saw, must make sure the saw table properties, uses, it is best to read the manual saw table to avoid loading the wrong, causing an accident.
5. The installation Alloy saw, must first check whether there is a split alloy saw blade, distort, fill level, lost teeth and other phenomena, and then install it.
6. Superhard alloy sharp serrated blade, prohibit the collision, fall to the ground, you must gently.
7. alloy saw blade, you must confirm whether the center hole of the blade firmly fixed on the saw table flange, a gasket must be good washer; Then, gently turn the hand to promote the saw blade, confirmed Whether the eccentric shaking.
8. Must alloy saw cutting direction indicated by the arrow direction of rotation aligned with the saw table. Do not install the opposite direction, the direction will lead out the wrong tooth installed.
9. Preroll time: Change alloy saw before use preroll one minute, let saw table into the working state, can be cut.
10. Before cutting, you must confirm whether the brick saws use of alloy saw the material being cut and consistent.
11. Cutting material must be gently cut into the normal operation of the blade material is prohibited Forced straining hard to push.
12. Ban reversed, inverted transfer lead out tooth, dangerous.
13. Use abnormal sound heard and saw abnormal shaking, cut not usually, immediately stop operation, looking for anomalies reason, the replacement blades.
14. Cutting, the prevention of sudden stop of the blade material is cut intermediate. Cutting was stopped at the middle can cause jagged off, blade deformation.
15. After cutting please wipe the sanding belt rust oil. Prevent blade rust.
16. When not sharp serrated teeth grinding again, you must get the manufacturers specify abrasive grinding technology, shop or store to grind, otherwise it will destroy the original jagged angles affect cutting accuracy and shorten the life of the blade.
2013年8月22日星期四
crystal diamond powder
Grinding, polishing process
Massive polycrystalline diamond particles and particles of single crystal diamond grinding sharp dry core bits contrast seen sharp, shallow produce polycrystalline diamondMicro-cracks are transverse cracks (cracks at right angles with the polishing pressure) enhances the removal, its vertical microcracks (and polishing pressureDirection of the force in the same direction) the damage of its surface is limited. The overall effect is faster removal of workpiece material and the residual micro-Cracks in the tamping rammer subsequent polishing process to remove the surface reaches a minimum. Production efficiency aside on the edge, in itsApplication process benefit is obvious, such as optical - coupler and optical components must be as transparent as possible through certain wavelengthsLight; magnetic element may interfere microcracks electronic, magnetic, or acoustic properties; polycrystalline diamond of high-precisionDegree of polishing will help you meet these requirements. Also be used for the IC chip and so on. More (poly) crystalline diamond, is a strong impulse in the explosionUnder the action of shock waves, synthetic crystals of diamond polycrystals. It is different from the production of detonation nanodiamonds.Its structure is characterized by: crystal isotropic, no cleavage plane. Not only has the unmatched hardness and strength, but wet tile saw also has a veryHigh toughness. At the same time it does not produce fracture along the cleavage plane phenomenon. And in the grinding and polishing process will automatically peel timelyThe microscopic appearance of a new cutting edge. This "self-sharpening" ensure the machining of high precision, high efficiency and will not damage the shallowTable dimensions.
Massive polycrystalline diamond particles and particles of single crystal diamond grinding sharp dry core bits contrast seen sharp, shallow produce polycrystalline diamondMicro-cracks are transverse cracks (cracks at right angles with the polishing pressure) enhances the removal, its vertical microcracks (and polishing pressureDirection of the force in the same direction) the damage of its surface is limited. The overall effect is faster removal of workpiece material and the residual micro-Cracks in the tamping rammer subsequent polishing process to remove the surface reaches a minimum. Production efficiency aside on the edge, in itsApplication process benefit is obvious, such as optical - coupler and optical components must be as transparent as possible through certain wavelengthsLight; magnetic element may interfere microcracks electronic, magnetic, or acoustic properties; polycrystalline diamond of high-precisionDegree of polishing will help you meet these requirements. Also be used for the IC chip and so on. More (poly) crystalline diamond, is a strong impulse in the explosionUnder the action of shock waves, synthetic crystals of diamond polycrystals. It is different from the production of detonation nanodiamonds.Its structure is characterized by: crystal isotropic, no cleavage plane. Not only has the unmatched hardness and strength, but wet tile saw also has a veryHigh toughness. At the same time it does not produce fracture along the cleavage plane phenomenon. And in the grinding and polishing process will automatically peel timelyThe microscopic appearance of a new cutting edge. This "self-sharpening" ensure the machining of high precision, high efficiency and will not damage the shallowTable dimensions.
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