Small diameter diamond saw blade for cutting marble

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....

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.

Research stone diamond bit drilling parameters affect its surface temperature

 Drilling in stone, because of relatively high speed movement between the diamond drill and stone complex tribological phenomena arising in the contact interface. Friction between diamond drill and stone, as the stone poor thermal conductivity, most of the heat transferred diamond segment, making diamond drill surface temperature, resulting in diamond graphite, diamond cutting capacity reduced, which leads to the bit matrix  thermal polishing pads for granite  fatigue, lower strength and stiffness, increased noise when processing stone, increased vibration, reduce bit life, serious diamond head off, causing injury to the operator, but also affect the processing quality and efficiency. Research diamond bit drilling parameters affecting its surface temperature to identify factors that influence the relationship between surface temperature and the law, determine a reasonable processing parameters, help to improve the diamond drill bit life and reduce processing costs, improve processing quality.
  Experimental conditions are diamond segments using a Cu powder, a diamond particle size of 60 to 80 mesh, using pressing sintering method, the welding head in the high speed steel cylinder. Diamond drill diameter φ37mm, high-5.6mm, width 2mm, base diameter φ35.6mm, height 45mm. Processing equipment used XK5032C type CNC milling machine, the device implements the X axis, automatic feed three directions Y and Z axes, spindle cooling method using water-cooled. The temperature measured with an infrared wood band saw blades  temperature measuring surface of the tool, the measurement temperature range of -50 ~ 650 ℃. Direct l2 ℃ measured at room temperature conditions. Stone were selected marble, sandstone and granite. This experiment studies the spindle speed, feed rate and stone impact performance parameters such as surface temperature of the diamond drill bit. Experiment was carried out under dry cutting conditions, machining state. Results of impact 3.1 feed rate on temperature
 When processing stone diamond drill, impact drill surface temperature of many parameters, including diamond properties, performance bond, stone physical and mechanical properties, processing parameters, cooling parameters. Effect on the surface temperature of the diamond drill bit experimental study of stone processing parameters and performance. Figure 2 is the spindle speed is 300r/min, the feed rate was 10mm/min, 15mm/min, 20mm/min, 25mm/min, when the surface temperature of the pre-drill drilling marble drilling time curve. As can be seen in Figure 2, in the four kinds of conditions of feed rate, the surface temperature of the diamond drill bits are increased with the increase of the processing time. In the early stage of diamond tools manufacturer  processing, the temperature increases relatively slowly, when the processing time exceeds 4s, sharp increase in temperature. When the processing time reaches 10s, the diamond drill is the initial surface temperature 5 times. Figure 3 feed rate versus temperature curve for the processing of marble. From the figure can be seen in the feed rate l0 ~ 20mm/min the temperature rises slowly, the feed rate of 20 ~ 30mm/min, the temperature rise is most obvious, the most heat in this interval drills stone processing generated. As the drilling process, the diamond drill bit with a large stone surface friction, resulting in diamond drill surface temperature rise. Due to the low thermal conductivity of marble, and a high thermal conductivity of the tool, a large part of the heat conducted to the diamond drill bit, diamond drill causes the surface temperature. Since the feed rate increases, the cutting face of the contact per unit time increases, the number of cutter contact with the stone, the surface temperature increases.

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.

Diamond powder and reducing segregation and aggregation

 Pelleting process in ancient Chinese medicine processing to get the application and development. Now widely used in the pharmaceutical industry, the preparation of powder metallurgy materials and alloys, metallurgy, ceramics and fertilizer industries. In recent years, the production of diamond tools in order to improve production efficiency ferrules and quality, so that it can automate production, and the development and application of the pelleting process.
Pelleting process in powder metallurgy and diamond tool industry was application and development, mainly due to it has the following advantages:
1. Improved flowability and improved. After granulation powder having a particle diameter of a large particle size than the original powder, each particle is surrounded by the number of particles may be exposed to reduced, so the adhesion, cohesion and mutual friction greatly reduced, thereby to improve and increase the particulate material mobility.
2. Diamond powder and reducing segregation and aggregation, more uniform distribution, improving the performance of products. Granulation process prior to powder, diamond mixed with a binder, and then add solvent mixing and granulation wetting again, every single diamond powder wrapped in quilts are then cold pressing and sintering, thus preventing polishing pads for granite  segregation and diamond powder aggregation, thereby increasing the sintering properties of products, uniformity and stability of the product.
3. Improve the accuracy of the product size and weight, since the mixed powder to improve flowability, the powder products more uniform loading of the cold, cold products, improve the accuracy of the geometric dimensions and weight. This repression shaped products, sandwiches, laser welding blade tips and the transition head better.
4. Reducing the loss of cold mold. Since the metal grinding wheel  powder fluidity, diamond powder parcels were distributed more evenly, so the cold mold loss reduction, die life by 50 or more.
5. Improve the efficiency of the process cold and economy, in order to achieve the cold automated production to create the conditions. As the improvement of powder flowability, die life, so that ordinary cold press automatic weighing more efficient, making the volume of the adoption of automatic cold press possible. A foreign company 32VPM volumetric cold press, according to the head design, the operating parameters entered into the computer, basically metal grinding wheel  do not care personnel, automatic production. Granulation and displacement using cold press, the head is reduced to suppress the time from 32S 10S; die life by a 12,000 increase to 25,000; cold reduced costs from $ 0.35 to $ 0.11.
6. Reduce body powder pollution hazards to workers. After pelleting process used to reduce fine particles easily broken, easy storage and transportation, so that dust emissions and pollution greatly reduced.

CBN tools and tool compared to conventional materials What are the different places

cbn at high temperature to 2000 ℃ was still with excellent red hardness .
cbn is a hardness second only to diamond superhard cutting tool materials ,

usually in the processing of the material hardness greater than 48HRC works

best when ( machining soft materials cbn wear out quickly ) . cbn at high

temperature to 2000 ℃ was still with excellent red hardness . Although cbn

more brittle than cemented carbide , and the thermal and chemical stability

than the ceramic , but it has a higher than ceramic cutting tools impact

strength and crack resistance , and low rigidity of the machine is also able

to cut hard metals. In addition, custom- cbn proper power tool can withstand

rough cutting load, intermittent cutting blows and finishing the required

high temperature and abrasion resistance . Appropriate for the specified

customization processes including machine and fixture rigidity , edge

grinding large enough to prevent microscopic peeling , and the tool base body

is a high content of grade cbn . cbn grade high content of these specified

processes are required, because they have high speed under heavy load

conditions edge machining requirements of high thermal resistance and

toughness and for severe intermittent cutting . These properties make this

material is used as a tool material grade roughing of hardened steel and

pearlitic gray cast iron .
low content of material grades cbn cbn content than the more brittle grades ,

but they are used when machining hardened ferrous better performance . They

have a lower thermal conductivity and a relatively higher withstand high-

speed cutting and the negative rake angle  General purpose blade of the compressive strength of the

heat generated . Higher cutting zone temperature can help soften the

workpiece material and chip breaking , while negative rake angle can enhance

the tool cutting edge stability , improve tool life and allows depth of cut

is less than 0.25mm . Because the tool can Edge 2000 Pads  cbn surface finish of better than

0.4μm and maintain concentricity of ± 0.012mm , dry car hardened workpiece

is usually an attractive alternative to dirty grinding the cooled solution

strengthening . Although cbn is a hard turning and high-speed milling

particularly fond of tool material, but  polyethylene oxide the ceramic and cbn have an amazing

range of applications overlap , and therefore it is necessary to use the cost

- benefit analysis to determine who can get the best results .

Inner circle grinding mechanical transmission

 Inner circle grinding is generally divided into four types: wind-driven inner circle grinding, high-speed electric aerostatic bearing inner circle grinding, mechanical drive and electric grinding inner circle inner circle grinding.Wind-driven inner circle grinding: spindle with  concrete saw blades  a turbine driven by compressed air turbine rotates the spindle speed, spindle speed reaches 10000R/MIN. Moreover, small vibration, pressure can be adjusted stepless. And with regulators, filters and other accessories.Aerostatic bearing speed electric grinding inner circle: The aerostatic bearing (supply pressure is 40 ~ 65MPa), grinding system rigidity, both electric grinding characteristics, speed up 180000R/MIN, suitable for grinding a ~ 10MM hole.Inner circle grinding mechanical transmission: mainly by the spindle, bearings, sleeve body shell, flat supporting pulleys and other components. Then, after replacement of the long axis, is used to grind different bore diameter and  granite polishing pads length, for comparison, the use of low speed, the speed is generally lower than 2000R/MIN.Electric grinding inner circle: A three-phase asynchronous motor direct drive, and another by a high-frequency electric motor driven spindle speed of up to 50000 ~ 90000R/MIN. Output power is larger, instantaneous overload, speed characteristics hard, little vibration.enerally the heat generated by the grinding process will burn the workpiece, so you need to use coolant to promptly take the heat, this is called wet. However, grinding tools is a special application, as part of more complex shape, machining accuracy is relatively high, most of the processes set by manually, there is no way to use wet methods. In theory, the hardness of steel molds are high, and SG monocrystalline corundum grinding wheel is the best option.

the use of resin-bonded grinding wheel

Stainless steel toughness, high temperature strength, grinding force, thus requiring wheel has high strength, can withstand greater impact loads. The grinding wheel stainless steel with a ceramic multi-binding agent. Vitrified heat resistance, good corrosion  carbide tipped saw blade resistance, not afraid of wet, porous, not only to maintain the grinding wheel abrasive cutting, can obtain higher productivity, and can withstand greater impact loads. For cutting, grooving wheel large diameter thin, also can produce the resin binding agent, for grinding stainless steel parts. It is flexible, not afraid to shock, but the resin bond afraid alkaline solution, bear high temperature, when the temperature is higher than 150 ℃ will soften and lose strength. Thus grinding must be fully cooled. However, acid-resistant stainless steel and other materials in the grinding of the hole, the use of resin-bonded grinding wheel, grinding holes can improve the surface quality and avoiding burns.Hardness
Stainless steel grinding wheel hardness should be higher than normal carbon steel grinding a little softer, so  concrete diamond blades that the wheel has a good self-sharpening. Wheel strength is too high, not falling blunt abrasive, grinding wheel clogged evil, will cause the grinding force, grinding heat increases and the workpiece surface burns. This is for grinding stainless steel with particular attention to prevent. In addition, abrasive grinding wheel hardness also affects the degree of adhesion and stainless steel materials. Table 02 shows that the higher the hardness of grinding wheel, grinding wheel adhesion more severe. Of course, wheel hardness is too low, or excessive wear

Affect the efficiency of diamond saw blade main reason

One , sawing 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 difficult cutting granite , remove the blade speed limit is appropriate. Granite tiles in the sds hammer drill bits  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 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 stone polishing pads  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 . Generally speaking , sawing softer stone, such as marble, may  industrial saw blades be appropriate to increase the feed speed , if the feed rate is too low, more conducive to high cutting rates . Sawing fine structure , relatively homogeneous granite, may be appropriate to increase the feed speed , feed rate is too low if the diamond blade easily be polished . But sawing UNEVEN coarse granite structure , should reduce feed speed , otherwise it will cause the blade vibration and reduce fragmentation leading diamond cutting rates . Granite cutting feed rate is generally 9m ~ 12m/min within the selected range .

CVD diamond coated with amorphous diamond coating difference  Amorphous diamond

coatings are deposited using a PVD process carbon. It has a key part of the diamond SP3, SP2 also has some carbon bond; their film hardness is high, but lower than the hardness of diamond film; thickness than we usually deposited diamond film to be thinner. Machining graphite, amorphous diamond coated tool life is uncoated carbide tools 2-3 times. In contrast, CVD diamond is deposited using CVD process pure diamond coating, machining  carbide tipped saw blade graphite carbide cutting tool life is 12-20 times, thereby reducing the number of tool changes to improve the reliability and accuracy of processing consistency. 
(2) can not be used diamond tool machining hardened steel 
Diamond from carbon atoms. Certain materials when heated, sucked from the carbon atoms in diamond and carbide is formed in the workpiece. Iron is one such material. Cutting tools with diamond iron group material, the friction generated heat causes diffusion of carbon atoms in the diamond into the iron, the resulting diamond coating due to chemical wear and premature failure. 
(3) re-grinding and (or) heavy coating  construction tools  of diamond coated tools is difficult to guarantee the quality of the coating formed on the surface as the tool for the pure diamond, so the tool with a diamond wheel for re-grinding takes a very long time. In addition, the growth of the diamond tool used. Preparation of the tool will change the chemical properties of the surface, since the coating of this chemical properties requires very precise control, so the effect of the tool recoating difficult to be guaranteed. 
(4) diamond coated tool life varies 
Like any other tool, diamond coated tool life varies, depending on the material to be cut, the choice of feed rate and cutting speed, and the geometry of the workpiece and so on. Generally, diamond-coated graphite machining tool life is uncoated carbide tools 10-20 times, in some cases, may even be longer. This way, you can use a tool to complete almost any processing tasks without tool change due to tool wear and to avoid disruption and recalibration process, making it possible to achieve unattended machining. The processing of the composite material, is entirely possible to obtain a longer tool life. 
According to reports, in the processing of  cutting discs high-density glass fiber, carbon fiber and Gl0-FR4 other difficult machining composite materials, diamond-coated tool life up to uncoated carbide tool 70 times. 
(5) diamond coating spalling can prevent flaking coating of diamond-coated tools are a serious problem, but also a common problem (especially in the processing of materials like carbon fiber), will lead to unpredictable tool life. The late 1990s, interfacial chemical properties were identified as affecting the diamond coating adhesion properties of important factors. By selecting good compatibility Carbide chemical characteristics, the use of appropriate technology and reasonable pre-deposition reaction conditions, it is possible to reduce or eliminate the diamond coating spalling, stably smooth wear patterns. Observed under the microscope normal wear diamond coated tool, you can find the diamond was worn until stable carbide substrate, without chipping or peeling.

Diamond tool according to materials which several species classification

Single crystal diamond cutting tool must be 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.
Natural diamond single crystal diamond is the most wear-resistant material . Fine texture of its own , after fine grinding, cutting edge concrete crack chaser  edge edge radius as small as 0.008 ~ 0.005μm. But more brittle natural single crystal diamond , the crystal anisotropy, different surfaces or in the same plane of the crystal in different directions were different hardness , during grinding and use must choose the right direction . The use of harsh conditions, coupled with natural single crystal diamond resources are limited, the price is very expensive, so they use a production PCD, PCD / CC and CVD diamond tools . Some natural single crystal diamond is mainly used for ultra-precision machining non-ferrous metals or gold jewelry production .
Synthetic single crystal diamond the size, shape and performance are in good agreement , present due to high pressure technology matures , a certain size can be prepared by synthetic single crystal diamond , especially in the processing of high wear-resistant laminated wood , it performance than PCD diamond cutting edge will not cause premature passivated.
Synthetic polycrystalline diamond (PCD) and synthetic polycrystalline diamond and carbide composite blade (PCD / CC)
PCD is at high temperature ( about 1800 ℃), pressure (5 ~ 6MPa) , the use of cobalt and other metal binding agent to a number of polycrystalline diamond crystal powder polycrystalline material , although slightly lower than the hardness of a single crystal diamond , but it is randomly oriented diamond grains polymerization , is isotropic , as can be arbitrarily oriented cutting tool sharpening , no natural diamond that  cup grinding wheels must be selected as the best cleavage plane as a rake . In cutting, the cutting edge is very sensitive for accidental damage , wear resistance is also strong , long stay sharp cutting edge , can be used when machining high cutting speed and larger cutting depth ( to eat deep ) , life is generally higher than the WC-based cemented carbide cutting tools 10 to 500 times , and because the metal binding agent PCD has conductivity , making PCD easy to cut to shape , and is a rich source of raw materials , the price is only a few tenth of natural diamond a fraction of the ten have become traditions WC-based cemented carbide cutting tools , high-performance alternatives.
PCD inserts to improve the toughness and weldability in the cemented carbide substrate , sintered or pressed on the  sds hammer drill bits surface of 0.5 ~ 1mm thick layer of the composition of PCD diamond composite blade (PCD / CC). PCD / CC welding or machine folder available way of making knives. Due to its good weldability , regrinding easy , low cost, and therefore widely used. Hereupon , PCD and PCD / CC sharp cutting edge of the tool and are not as good surface quality single crystal diamond , while its workability is poor, the grinding ratio is small , it is difficult according to the geometry of any shape head , still not easy to manufacture with chipbreakers indexable end mills and other geometric shapes and complex products. CVD diamond CVD diamond is a diamond material of high wear resistance of pure , non- binding agent , which is at low pressure (<0.1MPa) prepared under . CVD diamond films are coated CVD (CD) and CVD thick (TFD) forms.
CD is a CVD ( chemical vapor deposition ) process , the carbide substrate ( K type alloy used ) is deposited to a thickness of about 10 ~ 30μm, composed of a polycrystalline diamond film is made .

large diamond saw blades

 1 product heat treatment method: This large-size saw the matrix heat treatment, currently there is no special equipment, we use a unique heat treatment process, a good solution to large size, thin thickness of the core bits for concrete  base body heat problems, can better control the hardness HRC38 ± 3 range improved blade stiffness matrix, increasing the life of the product.(2) processing methods: face grinding also saw the matrix product processing difficulties. We have developed a white surface grinder lathe, very clever solution to this problem, the product thickness tolerances can reach the national standards, greatly improving the static balance indicators, in addition to material due to surface oxidation layer and decarburization, product fatigue life greatly improved.3 blade cutting process for chip removal mining practical difficulties, the company also made a matrix shape bold exploration: We saw the matrix using varying amounts of the appropriate parts machining holes hollowed out, does not affect the overall strength of the blade under the premise of improving the cooling BTA efficiency, extend the blade life and reduced energy and mining blocks shorter time.Fourth, with the  flap discs traditional way of exploitation of comparative economic and technical indicators
New mining methods applied to improve the resource utilization rate of extraction, the exploitation of quality improvement, a corresponding increase in value-added products. Reduce production costs, while overcoming the traditional way of exploitation of poor safety performance exist, serious damage to the environment and other shortcomings, has great economic social benefits. Fifth, use requirements1 Before Installation(1) saw the 4 inch saw blades  track laying claim sleepers solid formation, saw cutting process in order to avoid shaking, saw the track parallelism tolerance to ≤ 5mm, the level of tolerance ≤ 2mm.(2) In order to ensure flatness of the blade during cutting strength, the saw blade clamping flange diameter> i280ram, roughness flange side jump directly affects the blade. Therefore, the user should check before using flange accuracy, it is not generally Ф280mm flange flatness <0.05mm, and ensure clean flange must not remain stone chips dirt.(3) regular testing Saw axis accuracy, and ensure its spindle runout ≤ 0.03mm, in order to avoid the blade cutting process produces jitter, affecting the quality of life of saw blade material cutting.(4) cooling water directly affects the size blade cooling effect, chip capacity blade cutting life. Therefore recommended Ф2000 (or Ф2200) cooling water ≥ 1001/min, Ф2800 (or Ф3000) cooling water ≥ 1601/rnin, and fully injected into the blade cutting seam.

grinding machine vibration on quality of

Grinding the disk side jump and machine vibration will cause the grinding disc facing the impact of the blade, thus undermining the straight edge, in which the disk side jump in particular more direct concrete saw blades  impact, which is caused due to the impact direction side jump perpendicular to the disk. Figure 3 and Figure 4 are the degree of the disk saw blade and the machine side jump between vibration. Seen from the figure, the disk side jump serrated blade and machine vibration on the degree of influence were all there exists a critical value, when less than the critical value, the blade serrated degree tends to zero; And when greater than the critical value, the degree of sharply serrated blade.In order to reduce the disk side jump in oil stone grinding disk, you should also detect the disk side jump, and  granite blade  to eliminate as far as possible by grinding side jump. Then need for grinding plate line balancing to reduce the running imbalance because the vibration mechanism.Also with the side jump and vibration grinding machine precision and damping performance related. Traditional wooden top and top grinding machine shaft due to fiber gasket is required between the pads, and because dry core drill bits  of the rigid timber restrictions would result in a high-speed rotating grinding disc generated 0.05 ~ 0.1mm Dynamic beat; addition, wood and fiber materials poor heat resistance, the high sliding wear easily under conditions leaving a gap between the shaft and the top and therefore require frequent adjustment of the gap, replacement liners or wood top. Unstable due to the use of such equipment by many factors, only some of the best in the device status is not a long period of time to grind out the basic qualified natural diamond tools, even a skilled operator, can only reach 30 % ~ 50% of the processing yield.

diamond superhard material properties and role Diamond

Superhard materials as superior performance, application constantly expanding, from the developed to the metal processing optical glass processing, stone processing, ceramics processing, processing of brittle materials is difficult for traditional processing areas.
Natural single crystal diamond, because of its anisotropy, the difference of the hardness of the crystal is very  diamond blades large, in the grinding tool when choosing the soft side of a polishing surface, and the surface of their hard as the rake face or the flank, This brings a favorable ground conditions, its anisotropy, so in use, to be considered a reasonable choice of the crystal plane, for example, hardness of the anvil, in use, the use of pressure is measured in or bouncing measured hardness of the material, but because of the hardness of different face, the results are different, of course, with a hard surface will help prolong life, and if made of natural diamond wire drawing die, because the hole face constituted by the crystal surface, so inconsistent hardness, wear will be uniform, circular cross section while the wire will cause stress differences uneven hardness, and affect the use of diamond sintered body and the thick-film diamond, the isotropic use in such products become very favorable.
PCD, PCBN, because grains are different, different concentrations, the performance is different, must be a  diamond cbn wheel reasonable choice. Diamond is a pure diamond thick, close to the hardness of natural diamond, and PCD, PCDN diamond powder is mixed with the binding agent is sintered, so by the binding agent of the hardness, the hardness as the former.
Is well known, diamond with iron affinity, can be used in ferrous and non-metallic materials, while CBN even at a high temperature of 1000 ℃ cutting ferrous metal is fully competent. Has become difficult to machine materials, the main cutting tool materials. Superhard materials generally refers to a synthetic diamond, artificial CBN. These two materials exist, played a complementary role, you can overwrite the current and future concrete ring saw  development of a variety of new materials processing, the entire cutting areas is extremely beneficial.
Precision diamond cutting tool sharpening requires great skill, in order to obtain a more accurate cutting edge radius, in particular less than 0.05um less precision, and of the grinding machine made very strict requirements, must have a high turn precision spindle shaft, the old mill were not suited, began to use more as a support air bearings, grinding disc must be able to be on the machine Shuhei to face runout control 0.5um or less. PCD and PCBN the grinding is relatively easy because the hardness is relatively low, with a diamond grinding wheel will fit, while thick diamond is different, its hardness close to the natural diamond, and is isotropic, so grinding more difficult .

what the cutting diamond

In the entrance area to cut pieces as monomers, and its share of China's import growth still equal good.  tool imports despite a substantial increase in imports of manufactured goods organs but not reasonable, high-grade resources, high energy consumption of products accounted for a large proportion of imported products subject to further beautify the granite core bits  organization.
China Machine Tool Equipment wealth Association statistics show that in 2010 China's machine tool import totaled $ 7.03 billion, an increase of 48.4%, of which metal processing machine tool imports $ 1.85 billion, an increase of 31.3%, significantly lower than the growth rate of its machine tool manufacturing Works growth. In the export of products, abrasives imports continued rapid increase, of 15.3 billion U.S. dollars, an increase of 100 percent, and cutting tools, tool machine tool industry to become the largest amount of manufactured goods imported two types of system works, machine tool equipment, manufactured goods accounted for Entrance amount of 44.6%.
In these two types of manufactured goods, high-end  diamond cbn wheel resources such as abrasives and cutting tools, high energy consumption products occupy a large proportion of the absolute value of the machine at a higher proportion of imported products are getting smaller, accounting for only 26.3% low compared to 2009 by 3.4 percentage points over the same period, imports of product structure management status differences have not been changed.
2011 to deal with the whole abrasives is not a small chance of provocation years, twelve five counsel put forward to the diamond polishing tools  entire industry has brought a lot of opportunity. Nothing more than the implementation of energy conservation policies abrasives industry theoretically gave a lot of pressure, through the market situation, the value of the abrasive impact is not big, compared to the estimated future there will be a need to go jumbled history through.

used alloy blades need to pay attention to what matters

 must be carefully read before using manual cutting machine and packaging items mentioned on the cover.
2, according to the choice of materials to be cut blade varieties, and check blades for cracks, distortions, lost stone polishing pads  teeth, do not use if damaged blade.
3, be sure to use a good cutter blade casing mounted guard, and wear face masks or protective eye.
4, the blade cutting machine please check before installation whether spindle runout, when the blade mounting flange and nut set with tight after installation and people must be the center hole of the blade is firmly fixed on the flange, according to Taiwan, a gasket must be good washer buying gently pushed manually rotating blade confirm whether the eccentric shaking.
5, after installing alloy saw before use preroll one minute, until the machine into operation only when the cutting operation.
6, the non-automatic cutting operation, you must gently normal operation of the saw blade enters the material, Forced hard pushed hard prohibited. And to prohibit reverse prohibit suddenly saw parked in the middle of the cut material, or cause jagged off, saw body deformation, prone to danger.
7, the use of abnormal sound heard and saw abnormal shaking or section does not usually stop the job and find the  metal grinding wheel reason for the exception, the timely replacement blades.
8, after cutting please wipe rust oil to prevent blade rust due to long periods of use.
9, insert the blade perpendicular to the tool holder to hang in a dry, avoid wet areas. Do not place the blade flat on the ground, otherwise easily lead to blade deformation. Do not directly stacked multi-chip saw blade shall be spaced packaging to avoid jagged collision should gently.
10, when the blade is not sharp  serrated grinding again, not easy to damage teeth grinding time original angle affect cutting accuracy and shorten the life of saw blade. First, how to choose the right blade?
1, the basic data: ① machine spindle speed, ② workpiece thickness, and texture, ③ saw blade diameter size and pore size (shaft);
2, selected on the basis: the number of revolutions of the spindle and intends to match the blade diameter calculation, cutting speed: V = π × diameter D × revolutions N/60 (m / s) is generally reasonable cutting speed 60-90 m / sec,
Specific recommendations:
Material Cutting Speed
Cork 60-90 (m / s)
Hardwood 50-70 (m / s)
Particleboard, plywood 60-80 (m / s)
Cutting speed is too large, machine vibration, voice large, reduce the stability of the blade, the processing quality decreased, the cutting speed is too small, the production efficiency is lowered. The same feed rate, cutting the amount of increase per tooth, affecting the processing quality and life of the saw blade. Because blade diameter D and the spindle speed N is a power function, in practice, a reasonable increase speed and reduce the saw blade diameter is most economical.
3, quality bid:
As the saying goes: "not good goods cheaper, better goods are not cheap", on the other commodities that may true, but I am afraid that the tool tool is not at all clear; key is to match. On the job site of many factors: cutting objects such as equipment, quality requirements, quality of personnel and so on. Comprehensive assessment, sensible manner, the best use, just right, in order to save money, reduce costs, participation in the  turbo blades competition in the industry. This depends on the mastery of professional knowledge and understanding of information of similar products.
Second, the proper use of:
In order to play its best performance blade must be strictly in accordance with the standard use;
1, blades of different sizes and uses, the design of the head and the base form angles differ by their corresponding possible occasions;
2, the device spindle and plywood size and shape and position accuracy effects have a significant impact on the use, installation and adjustment to be checked before the blade. Especially for plywood blade contact surface with the impact caused by the clamping force to slip displacement factors must be excluded;
3, pay attention to the work of the blade, an exception occurs, such as vibration, my voice, machined surface material moving situation, you must promptly stop adjustment, and timely grinding, maintaining peak interest;
4, grinding blade must not change its original angle, to avoid sudden thermal quench local head, the best professional grinding
5, temporarily without the saw blade to vertical hanging, avoid prolonged flat, the matter should not heap pressure on it, head office to be protected, not allowed to collide.

diamond wheel handling storage

Diamond grinding wheel in the handling storage we need to pay more attention to some of the details matter , in order to avoid accidents , the following details below:
1 diamond grinding wheel in the handling, storage medium , can not be subject to strong vibration and shock, do not allow scrolling when handling diamond wheel to avoid cracks, surface damage .
2 printed with diamond wheel speed  diamond cbn wheel characteristics and safety signs shall not daub or damaged , avoid using the confusion.
3 diamond grinding wheel diamond grinding wheel storage time should not exceed the period of validity of resin and rubber bonded diamond grinding wheel from the date of delivery , if the storage period exceeds one year , subject to rotation after passing the test before use.
4 diamond grinding wheel storage site should be kept dry , suitable temperature, to avoid mix with other chemicals . Diamond grinding wheel to prevent moisture , cold , heat and corrosion by harmful chemicals that strength.
5 diamond grinding wheel should be based on size, shape and size of the different classification place , to prevent damage or laminated diamond wheel due to improper storage deformation .
Processing method of grinding wheel Today we learn more about diamond wheel grinding method :
Diamond grinding wheel grinding become diamond blade circular saw  increasingly willing to use processing methods. To meet the standards of today's high-precision machining , grinding and sometimes even has become the only way of processing . With the falling prices of diamond grinding wheel , grinding has become a more commercial products.
Through the full use of newer abrasive particle size , grinding and grinding process has been further improved and improved. Now, the whole market was largely dominated by more sophisticated grinder .
However, to achieve high-precision  cutting blades machine tool itself is not the only recipe for grinding , diamond grinding and particle size , diamond grinding wheel dressing systems, software systems, operator and other factors are all intelligent processing and production of high-precision products play a key role .

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.

stone cutting diamond saw blade play an important role

As manufacturing needs, now used in stone processing industry in the number of synthetic diamond straight up, and their consumption accounts for about 90% of total synthetic diamond, the ceramic tile saw  domestic diamond saw blade matrix is ​​mainly used in stone processing industry.Classified by material, the current domestic production of diamond saw blade matrix materials are 50Mn2V, 75Crl and 65Mn three kinds of material, some of the low-end market as well as with 45 # steel. 45 # steel is the ordinary carbon steel, 65Mn spring steel is common, 75Crl is carbon steel. Comparatively speaking, 50Mn2V is a medium carbon steel, 50Mn2V fine grain size, high thermal stability, high strength and toughness, fatigue resistance and heat resistance. 50Mn2V saw the matrix material with complex multi-frequency welding, long life, easy blade after blade welding deformation, deformation easy to repair, etc., there are products in the course of the rigid effect gradually becomes higher, thus 50Mn2V materials are widely used in processing and production of diamond saw blade matrix.Classification according to specifications, the domestic stone processing saw the matrix size starting from ф200mm maximum of ф3500mm (foreign specifications for maximum saw blade towel 5000mm). Which, dp200-600ram specification sheet is mainly used for semi-finished products cut (cutting edge) processing; ф650 above specifications are mainly used for similar tombstone, grave stone columns and other thick (column) molding sawing and for sawing blocks of cut (board) wood processing. Especially ф1600mm saw the matrix currently the most widely used.ф200 ~ 600mm Specifications diamond saw blade matrix, as low-tech, product technology and quality requirements are not bandsaw blades  high, only requires the ability to use cutting edge on the line, products on the market and more homogeneous. Currently ф200 ~ 600mm Specifications saw the matrix hundreds of manufacturers, the market competition is mainly price competition as the main means, industry competition, profit margins are low, the strength of some domestic enterprises have no intention to participate in such low-end market competition.ф650mm matrix relative to the above specifications ф200-600mm specifications, product processing difficulty to a large, initial capital industry into more higher threshold. Users of the product quality and performance requirements are also higher. Currently few domestic manufacturers, less than 10, the product showed a certain degree of diversity, competition in the market to non-price competition as the main means of the product itself merits of the quality, performance, stability, length of life and ring saw blades  quality of service competition in the market has played a key role. In Fujian, Guangdong and other southern regions, diamond saw blade matrix commonly used in a group, such as ф940mm kind фl600mm one each of 10 used in combination, ф680mm, фll40mm and фl600mm each combination of 5 and so on. Combination saw the matrix used for group-cutting granite and marble slabs, greatly improving efficiency and cutting sheet metal precision, power consumption saving more than 15%, while the blade matrix itself is also a higher quality and performance requirements.Along with the growing importance of environmental protection, mining blocks scarcity of resources, power resources supply is tight, stone enterprises manufacturing costs, increased competition, a number of energy-saving, resource-based, environmentally friendly saw the matrix gaining market Welcome, customers saw the matrix species needs some new features

How to make a small blade last longer

 work, should ensure that the workpiece is fixed, profiles cutting tool positioning in line wet diamond polishing pads  direction, so as to avoid abnormal cut, do not exert side pressure or curve cutting, feed to a smooth, avoid contact with the workpiece edge impact resistance, resulting in damage to the blade or the workpiece flying out of an accident.
⒉ work, we found that abnormal sound and vibration, cutting surface roughness, or odor, you must immediately terminate the job, timely inspection, troubleshooting to avoid accidents.
⒊ cutting and stop cutting at the fibre discs  beginning, do not feed too fast to avoid broken teeth and damaged.
⒋ if cutting aluminum or other metal, to use a dedicated coolant to prevent blade overheating, resulting in tooth paste, and other damage, affecting the cutting quality.
⒌ equipment flutes and suction device to ensure smooth flow of slag to prevent slag accumulation into blocks, affecting the cup wheels  production and safety.
⒍ dry cutting, do not long continuous cutting, so as not to affect the life of the blade and the cutting effect; wet sheet cutting, water jet cutting should be added, to guard against leakage.