Aluminium and aluminum grinding wheel grinding program which

1, the hardness is low intensity : The maximum hardness of aluminum HB110 ~ 120, the maximum tensile strength is generally 20 ~ 30kg/cm2. Low hardness , scratch resistance of a material to plastic deformation or poor , the grinding surface is easily scratched and bumps .
2 , the plastic ductility large , the grinding process produces plastic adhesion , blocking wheel surface ; while a low melting point alloy (660 ~ 780 ℃), the temperature in the grinding zone , the  marble polishing pads surface of the metal melt , adhesive wheel surface , resulting in the increase of the melt adhesion of the blocking wheel .
3, the linear expansion coefficient: the grinding action of heat , the aluminum alloy is easy to cause deformation of the workpiece , thus affecting the precision grinding of the workpiece surface .
4 , the grinding efficiency is low : in order to overcome the alloy produced in grinding the workpiece thermal deformation , reducing the grinding wheel surface adhesion blocking , to ensure the surface quality , to increase the number of dressing , ordinary steel is about 3 times , thus reducing the grinding productivity.
Second, the choice of grinding wheel aluminum : Aluminum grinding process the biggest problem is the " stick" , " block "
A, aluminum ultra- fine grinding , mirror grinding : Use the "PVA" wheel, equivalent to Japan 's "UB" wheel . Can achieve the effect of the mirror . The grinding wheel is also  fibre discs similar in structure and ceramics ( see below ) .
B, aluminum and semi- coarse grinding :
1 , abrasives : The brittle and sharp black silicon carbide .
2 , binding agents : Use with high strength ceramic binder , and oil, acid, alkali, corrosion resistance .
3 , particle size : to meet the requirements of the case using the coarse number. Coarse : selection of 36 to 46 # ; grinding : the use of 60-80 ; coarse grit No. relatively small number of participating grinding , grinding, less heat , reducing the deformation of the workpiece and the grinding wheel clogged ;
4 , hardness: should opt for a  granite core bits lower hardness, the grinding wheel to maintain a good self-sharpening . Generally used in H ~ J hardness .
5, the organization : an organization should adopt a more accommodating loose debris , so that the cooling fluid into the grinding zone , enhancing the cooling effect, reducing the grinding zone temperature . Should be used in large pores wheel loose organization , with good grinding effect .

Analysis method of diamond grinding wheel cutting wheel

Here today for me to introduce to you a brief analysis about the method of diamond grinding wheel cutting attention to detail the relevant information , I hope to help you in the future when masonry drill bits  you can buy some used, please follow the small series together to look at the contents of the following describes it !
A grinding wheel in the Leads chipping is easy : with a larger angle of the main cutting tool grinding wheel , cut entry provenance easy to chipping . To solve this problem , using a circular blade , changing the main angle , so that the Leads stable. The feed amount of 1 ~ 1.5mm case chipping phenomenon did not occur .
Second, the chip in powder form : Cutting wheel chips in powder form , in the form of tool wear is flank wear , mainly exposed diamond grinding wheel abrasive wear.
Third, the cutting force and the cutting temperature is low : diamond composite sheet has a high thermal conductivity  4 inch circular saw blade of tungsten carbide 1.5 to 9 times , the copper 2 to 6 times , the cutting zone temperature quickly spread . Thus, PDC cutter cutting resin bond or ceramic bonded grinding wheel temperature , many times lower than the cutting of metal . Fourth, with the traditional turning tools, diamond composite sheet in the process of turning almost no dust fly, also able to effectively reduce the noise , diamond wheels to further improve the working environment is conducive to worker health.
 Second, we have to consider is the size of choice, when you want to select coarse grained diamond wheels and vice versa , when faced with ultra- fine grinding wheel to use powder .

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.

the stainless steel grinding wheel

he hardness of the stainless steel grinding wheel is generally within the range C ~ N, where J, K, L, M use of the wheel. Microcrystalline corundum grinding wheel face, the selection of appropriate hardness J. In addition, large diameter grinding wheel face bore or grinding, the grinding wheel and the workpiece contact surface, the wheel is easy step pads  to passivation, to be elected lower hardness wheel; grinding forming surface, should increase the hardness of the wheel , otherwise they will be faster wheel wear and damage-surface precision grinding wheel; grinding hollow and thin wall of the workpiece, the workpiece deformation, and  concrete blades therefore should adopt a softer wheel; discontinuous surface grinding, abrasive easy to fall off, you should use a hard wheel.Organization
Stainless steel toughness, strong adhesion, to avoid clogging the grinding wheel, grinding wheel organizations should  diamond cup wheels choose a more loose, generally 5-8 is appropriate. Back to eat large knife and a large contact area should be selected organization loose wheel, the surface roughness Ra values ​​that require low or form grinding should be used in a more compact organization of the wheel.the wheel before use, to floating tapping with a mallet, the sound should be crisp, metallic sound! If the sound is muffled, for the voiceless, usually in transit collision, absolutely not allowed!

Width of grinding wheel

Width of grinding wheel grinding force, grinding power, first of all wheel drive motor power have a reasonable margin. In addition, the main components of the machine should have high accuracy  diamond blade saws and sufficient rigidity. If higher precision grinding wheel spindle, spindle elongation cantilever should be as short as possible, a reasonable choice of spindle bearing structures, such as hydrostatic bearing stiffness and rotation to obtain better accuracy. Workpiece headstock spindle and tailstock sleeve overhang minimize, the choice of a larger size, shorter overhang top, and as far as possible so that the headstock, tailstock rigid consistency. Tailstock sleeve spring should have sufficient clamping force. Wheel rack rails  tile saw blade should also have sufficient rigidity.
 Width of grinding wheel grinding heat large, so should supply sufficient grinding fluid. Estimated according to the following empirical formula Q = bs / 2 (where Q - Flow L / min bs - Wheel width mm).
 Width of grinding wheel, grinding wheel airflow generated large grinding fluid nozzle and the wheel guard should be tuck point blades  set block air baffle, the shape of the nozzle should ensure grinding fluid spray to the entire width of the grinding wheel, and a smoke fog devices.
 Width of grinding wheel grinding with the best grinding force control device, so that both or full width of grinding wheel performance, and avoid overload grinding, in order to ensure safe operation.

ceramic diamond grinding disc

Grinding Taocifaxin special - Ceramic diamond honing plate Introduction
Currently Taocifaxin from the material divided silicon carbide, alumina ceramics and zirconia ceramics, etc., divided by hermetic sealing requirements, watertight, oil-tight, and its multi-use cast iron grinding disc plus abrasive or grinding paste. Although its polished  concrete core bits quality to achieve customer requirements, but the drawback is as follows:
1 polishing efficiency is low
2 dirty work environment
3 parts must be cleaned after polishing
Four would not participate in polished and entirely effortless milling loss
W40 original cast iron disc using diamond powder removal 0.4-0.5mm, the grinding time of 30 minutes or so.
Original cast iron disc using 0.01-0.02mm diamond grinding paste polishing, margin 2-3 silk polishing time 40-50 minutes / plate.
A ceramic bond diamond honing plate Products
I am using the ceramic binder mixed with  abrasive tools fine diamond abrasives, pressing, high temperature firing paste hexagonal flake cast iron plate,
Coarse grinding using diamond powder, polishing high-precision ultra-fine, ultra-fine powders.
Second, the benefits
1, the grinding efficiency is several times grinding, polishing grinding efficiency several times;
2, the polishing process requires only clean water can be added to rust, which is collected and filtered water can stone polishing pads  be used repeatedly to achieve its clean processing, after processing the workpiece without cleaning, the workers operating environment is good;
3, product quality and geometry consistency;
4, cast iron disk can be used repeatedly;
5, grinding comprehensive low cost.

CVD diamond thick welding tool

CVD diamond thick film soldering tool is to first cut a good CVD diamond films once welded to the base (usually a class K carbide) to form a composite sheet, and then polishing composite sheet, the  diamond blade  second welded to the tool body, sharpening into the required shape and edge.Manufacturing process: high-quality CVD diamond films prepared by laser cutting → → welded into one composite piece → polishing → secondary composite sheet welded to the tool body → Grinding → test. Here are a few key processes, such as cutting, welding, polishing and grinding, etc.A laser cuttingCVD diamond film hardness, non-conductive (conductive CVD diamond now, but itsresistivity great), strong wear resistance, conventional machining and wire cutting method is not suitable for CVD Diamond Thick cut. Efficient processing method is laser cutting.(2) a weldingA welding means under vacuum CVD diamond thick film substrate is welded to some form a composite sheet. Diamond between the metal and the general poor weldability. Currently, diamond thick welding tool used mainly surface metallization methods. Solder the silver-copper alloy containing titanium, titanium role in the welding process of heating the surface of the diamond film and the reaction to produce an intermediate layer of TiC, the diamond film surface metal, thereby improving the welding strength.Welding Class K matrix is ​​usually carbide. In the high vacuum conditions, using diffusion brazing welding process added, Ag-Cu-Ti alloy as an intermediate layer, the diamond films on cemented carbide substrate weld, weld strength to meet the machining requirements.3 Composite PolishingThe purpose is to polish the upper surface of the blade (i.e., the rake face) polished to a mirror, generally required to achieve Ra0.1μm less. After polishing tool rake face and the chip can reduce friction and adhesion, extend tool life; also can  improve the flatness and sharp blade, improve machining accuracy. Polishing a composite sheet with a special polishing machine.4 secondary weldingSecond welding refers to the composite sheet welded to the tool body. Equipment used mostly for concrete blade   high frequency induction welding equipment, the use of silver-copper solder and solder flux. Soldering temperature is between 650 ~ 700 ℃. Temperature is not too high, the welding process the welding surface should be kept clean. Rational use of flux help to improve weld strength and improving the composite sheet material substrate and knife welding performance. Generally the strength of the second weld 180 ~ 200MPa, the diamond cutting tool to meet the processing requirementsIn addition, in order to improve the appearance of the tool can be worn away excess oil stone of silver and copper, with the blasting method to remove the surface oxide layer with Ni plated with passivation liquid immersion method or tool body to prevent the oxidation of rust.CVD diamond grinding with high hardness and wear resistance, grinding extremely difficult. Now masonry blades   widely used methods similar to PCD tool sharpening.5 Equipment: using a special tool grinder, equipment manufacturers in the United Kingdom COBORN Corporation, Taiwan KARMAM, Switzerland EWAG Corporation and Beijing Dean companies. Its main features include: straight edge grinding and circular grinding, circular grinding, and also includes a cylindrical conical flank flank formation and tapered cylindrical flank with a combination. In order to achieve these functions, requiring major sports machine include: machine tool spindle (wheel) rotational motion; spindle reciprocating linear motion; turret rotary motion, with the precise alignment of the microscope or projector rotation center, get a different tip round arc radius.

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.

thick diamond tool sharpening

Thick diamond tool machining methods: mechanical grinding, hot metal plate polishing, ion beam, laser beam and the plasma etching.sintered diamond toolThe roll grinding with diamond thick destruction method 12 inch saw blade  for processing into an average particle size of 32 ~ 37μm diamond grains or the direct use of the legal system HPHT diamond grains, the grain powder stacked on WC-16wt% Co alloy, and then use Ta foil to isolate, in 5.5GPa, 1500 ℃ under the conditions of sintering for 60 minutes, made of diamond sintered body, using this sintered into tools with high wear resistance.monocrystalline diamond toolSingle-crystal diamond tool is usually fixed on  dry cut blades the diamond crystal knife head, knife head with screws or plates fixed on lathe arbor. Diamond in the knife head fixation methods are: mechanical reinforcement method (the diamond surface polished base and pressurized with pressure plate fixed to the knife head); powder metallurgy (the diamond on the alloy powder by adding pressure in the vacuum sintering, the diamond knife fixed at the head); bonding and soldering method (using an inorganic adhesive or  cbn wheels other adhesive fixing diamond). Because the diamond and the substrate thermal expansion coefficient differences between the diamond easily loose.

diamond saw blade - the appearance of

A continuous edge blade: Continuous serrated diamond saw blade, usually produced by sintering method, commonly used as a basis for dry cut blades  bronze binder matrix material, cutting water to be added to ensure the cutting effect, and will be useful for laser cutting head gap species.2, blade-type blade: serrated disconnected, cutting speed, suitable for dry and wet cutting method.3, turbo saw blade: 1,2 combined with the previous two advantages, sawtooth-shaped uniform continuous presence turbo punch, improved cutting speed and increase service life.Diamond saw blade, blade constant sharp pebbles, Heng Rui concrete saw blades, diamond sculptured piece, slotted  cutting blades piece of diamond, diamond cut wall pieces, diamond cut pile pieces, Songshan cobblestone saw blades, concrete saw blades SongshanDifferent material selection of different types of diamond saw blades, different powder formulations suitable for different material properties of the material product quality, effectiveness, costs and benefits as well as the ring saw blades  passing rate direct impact.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 and cutting feedrate.

tungsten carbide steel tool material Basics

Carbide is the most widely used class of high-speed machining (HSM) tool materials, such materials are produced by powder metallurgy process, made of hard carbide (usually tungsten carbide WC) particles and the soft texture of the metal bond components. Currently, there crack chaser  are hundreds of different components of WC-based cemented carbide, the majority of them are used cobalt (Co) as a binder, nickel (Ni) and chromium (Cr) element is also commonly used binding agent, also can add other Some alloying elements. Why are there so many carbide grade? Tool manufacturers how to choose a particular cutting tool material correct? To answer these questions, let us look to make it an ideal tool material Carbide various characteristics.
Hardness and toughness
WC-Co cemented carbide in both hardness and toughness has a unique advantage. Tungsten carbide (WC) itself has a high hardness (more than corundum or aluminum oxide), and at elevated temperature hardness are rarely reduced. However, it lacks sufficient toughness, which is essential for the performance of the cutting tool. To take advantage of the high hardness of tungsten carbide and improve the toughness, people use the tungsten metal bonded together, so that the material is both far more than the hardness of high-speed steel, while able to withstand the cutting process, in most cutting force. In grinding cup wheels  addition, it can withstand high-speed machining heat generated by the cutting.
Today, almost all of the WC-Co cutting tool inserts are used and the coating, therefore, the base material may seem less important role. But in fact, it is WC-Co materials with high elastic modulus (a measure of the stiffness of, WC-Co at room temperature modulus of elasticity is about three times as high speed steel) for the coating of a substrate without distortion. WC-Co substrate can provide the necessary toughness. These properties are WC-Co materials, basic characteristics, but can also be produced when the carbide powder, by adjusting the material composition and material properties tailored microstructure. Therefore, the tool performance and suitability of a particular processing depends largely on the initial milling process.
Milling process
Tungsten carbide powder is through the tungsten (W) powder obtained by carburizing treatment. Tungsten carbide powder characteristics (in particular its size) depends on the particle size of raw material powders of tungsten and carburization temperature and time. Chemical control is also critical, the carbon content must be kept constant (close to the weight ratio of 6.13% of the theoretical value). In order to control the subsequent step by the particle size, can be added before the carburizing treatment a small amount of vanadium and / or chromium. Downstream of different process conditions and the type of final machining applications require the router bits  use of specific particle size of tungsten carbide, carbon content, vanadium content and chromium content in combination, a combination of these changes, can produce a variety of tungsten carbide powder. For example, tungsten carbide powder manufacturer ATI Alldyne company produced a total of 23 kinds of standard grades of tungsten carbide powder, and customized according to user requirements up to standard grades of tungsten carbide powder, tungsten carbide powder varieties more than 5 times.
When the metal bonded tungsten carbide powder and mixed together to produce a milled powder carbide grades, you can use a variety of combinations. The most common cobalt content of 3% to 25% (by weight), and the tool need to enhance corrosion resistance in the case of nickel and chromium needs to be added. In addition, you can also add other alloy components, and further improvement of the metal binding agent. For example, in the WC-Co cemented carbide adding ruthenium can be made without the premise of reducing the hardness significantly increase its toughness. Increase the binding agent content can also increase the toughness of the alloy, but will reduce its hardness.
Reducing the particle size of tungsten carbide hardness of the material can be improved, but in the sintering process, the tungsten carbide particle size must remain unchanged. Sintering, the tungsten carbide particles re-precipitated by dissolving process combines and growth. In the actual sintering process, in order to form a fully dense material, a metal binding agent to a liquid state (known as liquid phase sintering). By adding other transition metal carbides, including vanadium carbide (VC), chromium carbide (Cr3C2), titanium carbide (TiC), tantalum carbide (TaC) and niobium carbide (NbC), tungsten carbide particles can control the growth rate. These metals usually in the tungsten carbide powder and a metal binding agent is mixed with the milled added, although chromium carbide and vanadium carbide and tungsten carbide powder may also be formed when carburizing.
Recycled scrap carbide materials can be produced grades of tungsten carbide powder. Waste recycling and reuse of carbide in cemented carbide industry has a long history, is the entire economic chain of the industry is an important part, it helps to reduce material costs, conserve natural resources and avoid waste material and non- harm and disposal. Generally used cemented carbide by APT (ammonium paratungstate) process, or through a zinc recovery process for reuse after pulverization. The "regeneration" generally have a better carbide powder, predictable compactness, because of its surface area ratio is made directly through the carburization process of tungsten carbide powder is smaller.
Metal bonded tungsten carbide powder and mixing the milled processing conditions is crucial parameters. The two most common technique is ball milling and ultrafine grinding. Both processes can be uniformly mixed so that the milled powder, and to reduce the particle size. After the workpiece is pressed with sufficient strength to maintain the shape of the workpiece, and to an operator or robot can pick up the work operation, the milling usually also need to add an organic binding agent. The chemical composition of this combination is pressed into the workpiece can affect the density and strength. In order to facilitate operations, it is best to add high-strength bonding agent, but this will lead to suppression of lower density, which may result in lumps, causing a defect in the final product.
After the completion of milling, spray dried powder typically be generated from an organic binding agent that binds free flowing agglomerates. By adjusting the composition of the organic binder, these clumps can be customized mobility and charge density. By filtering out the coarse or fine particles, agglomerates can be further customized particle size distribution, to ensure that when the mold cavity is loaded with good fluidity.
Workpiece manufacturing
Carbide workpiece using a variety of craft molding methods. According to the workpiece size, shape, complexity level and production volume, most of the cutting blades are pressed by the top and bottom compression molded rigid mold. At each time of pressing, in order to maintain the consistency of the workpiece weight and size, to ensure the powder in the cavity (mass and volume) are identical. Powder flow mainly through the agglomerate size distribution and the characteristics of the organic binding agent to control. Loading the mold cavity by applying a powder 10-80ksi (one thousand pounds / square foot) of the molding pressure, the molded piece can be formed (or "blanks").

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.

Velcro wool ball (polishing pad)

Felt Felt polishing wheel Density 0.38-0.65g / cm 3, diameter 10-800 mm, thickness 3-50 mm, quality is divided into; premium, one, two, (material with industrial felt). Scope: eg concrete diamond blades  automotive beauty, glass, furniture, wood, stainless steel plate, stainless steel, castings, precision instruments, products, tools, gold and silver jewelry, precious metals and other surface polishing. The object to be polished clean and bright, tiny scratches can be shuffled around, played to mark polished as new results. Can be used with polishing liquid, paste, powder, with the use of better. Felt wheel plane different from the industrial production process blankets, organizations, small pores, unlike fabric that limit by latitude and longitude, good wear resistance, is wood, jewelry, glass, polished stainless steel plate throwing the best material. How to choose the blankets round: items need to be left at the correct density sized blankets round, throwing glass is generally used 0.45g-0.50g/m3, cast stainless steel plate dry polishing pads  used 50g-65g/cm3, polishing marble used 0.40g/cm3- 0.50g/cm3, jewelry, jade available 50g/cm3 around. Felt wheel features not every product specifications are available, such as strong sexual Felt wheels density is too large will lose elasticity, density is too small to lose abrasion resistance, the thickness of wool have influence on the properties, according to the practical application to set.The product is widely used in ceramic tiles waxing decontamination, the pipelining tiles waxing machine waxing consumables. Now getting into the average family on the floor, floor tiles cleaning waxing polishing. Applicable to soft floor polishing.
Red: remove minor scratches and dirt meet  abrasive tools unexpectedly, was formed smooth and shiny bright surface. Is ideal for daily cleaning and polishing products.
Black: grinding power, wear durability, mainly for the decontamination of ground, is used to start the first stage of grinding. Designed for heavy duty wet from the wax design. Effectively remove the wax surface, stains and glossy coating.

diamond brazing techniques applied in

Diamond high hardness and excellent mechanical properties make diamond tools for processing a variety of hard materials become indispensable effective tool. Metal base of the diamond matrix carbide tipped saw blade  adhesion (matrix package Xiang ability) that affect the life and performance of diamond tools is one of the main factors.
The diamond and general metals and alloys having a high interfacial energy between, resulting in the diamond particles can not be generally low-melting alloy infiltration, poor adhesion, in the conventional manufacturing techniques, the diamond particles alone after the carcass shrink the mechanical gripping force embedded in the metal matrix of the carcass, but not form a strong chemical bonding or metallurgical combine, resulting diamond particles in the work easily with metal base carcass separation, greatly reducing the diamond tool life and performance levels. Most of the diamond impregnated type tool utilization is low, a lot of expensive diamond in the work lost in the litter fall into. Lin Zengdong other first surface metallization using diamond diamond surface to impart a number of new features, such as excellent thermal conductivity, good thermal stability, improving its original physical and chemical properties of the metal or alloy to improve its wettability of the solution, etc.
Diamond surface metallization problem in the 1970s, it caused a domestic diamond tool manufacturing industry's attention. Many people committed during the sintering process to achieve the diamond surface of metal in the matrix material or on the diamond surface to add the wet saw blades  pre-glue strong carbide metal powder (which is not heated before the diamond, not associated with a chemical coating reaction only belong diamond coating) to expect them to realize the sintering process chemical bonding of the diamond. Although the literature has demonstrated some metal such as tungsten (not oxidized) at a lower temperature (800 ℃ or so) WC can be formed on the surface layer of the diamond, but the diamond surface to achieve the pre-metallization process used to view, to be in a vacuum conditions, 600 ℃ heating above one hour to get the desired adhesion. Impregnated with the most commonly used cutting tool diamond sintering conditions of view, non-vacuum or low vacuum of not more than 900 ℃ heated for 5 minutes or so, it is unlikely that the diamond surface of a metallization layer. Because both the active metal atoms (Ti, V, Cr, etc.) to the surface of the diamond or the interfacial reaction enrichment achieved metallurgical bond with the diamond are atomic diffusion process, the  stone drill bits temperature under the hot and such a short period of time, this process is very inadequate. In the solid-phase sintering conditions (sometimes a small amount of low-strength low-melting metal or alloy phase), chemical bonding of the diamond matrix or metallurgical bonding force is very weak or does not form.

​​diamond floor polishing pad narrative

Permeability hardening agent is a source of technology to improve the performance of concrete. Its main component is an inorganic silicate, through his concrete inside the capillary penetration into the concrete, in particular under the action of a catalyst, the activity of calcium in the concrete and the metal ions react with other active tile cutting blades  substances, a crosslinked structure of the condensate glue, the more dense concrete surface, hardness, wear resistance becomes better improve the mechanical strength of the concrete. Effectively inhibit water, oil, and other corrosive substances immersion channels and compacting the concrete, resulting in a clean, compact whole, greatly improving the strength of the surface hardness of the concrete,
Features:
Green, easy maintenance,
Waterproof, dustproof
Improve the performance of the concrete,
Extended service life of concrete.
Construction process:
Clean the floor: a washing machine or concrete cutting blade  with water and a brush for cleaning construction, careful not to use acidic cleaners, use a neutral or alkaline cleaning agent;Polished Floors: No. 300-800 grinding using successively on the ground to coarse grinding, trimming rough ground where, using 1000-3000 No. grinding, fine grinding in turn, so that the ground is smooth and light luminosity.
Spray sealer: use MF-B108 with a low-pressure sprayer or hand sprayer for spraying, the nozzle as close to the ground to prevent the atomized product waste; 30 minutes to keep the ground moist, dry surface within 30 minutes if you need to supplementary materials, if after 30 minutes there is a concave plot material, pat dry with a rag.
Polishing: After spraying the  carbide saw blades ground is dry with 2000 r / min or more high-speed polishing machine for polishing; generally available washing machine fitted with 3M polishing pad, first with black, the latter with red.

circular saw blades used in the process, customers often encounter

chipping or out of gear;
run saws;
cut surface roughness;
bottom teeth cracking.
Serrated size after a scientific calculation, the welding residual stress is reduced to a minimum, no false  concrete core bits welding and unsoldering phenomenon.
One, grinding and maintenance alloy saw the importance of:
Circular saw blade after use, often have the following questions:
There serrated chipping;
surface fluff;
cutting power increased sharply;
To ensure the cutting quality and safety, must be made by skilled operatives timely regrinding and cleaning circular saw blades and
Timing Clear serrated surface on the dirt, to ensure perfect cutting.
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  diamond cutting tools 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 carbide drill bits  change its original angle, to avoid sudden thermal quench local head, the best professional grinding
5, temporarily unused blade to vertical hanging, avoid prolonged flat, the matter should not heap pressure on it, head office to be protected, not allowed to collide.

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.

affect the efficiency and lifetime of diamond saw blades factors

(1) diamond size: Common diamond saw blade diamond size 30/35 to 60/80 range. The more hard rock, should be selected with a finer granularity. Because at the same pressure conditions, the more detailed the more sharp diamond, cut hard rock in favor. In addition, the general requirements of a large-diameter blade cutting efficiency is high, with the coarser particle size should be selected, for example, 30/40, 40/50; small-diameter blade cutting efficiency is low, requires smooth rock cutting section, preferably to a smaller particle size, such as 50/60, 60/80.
(2) Segment concentration: the so-called diamond concentration, the diamond in the working layer is the  tuck point blades carcass in the density distribution (i.e. contained within the unit area weight of the diamond). "Norms" provides work per cubic centimeter of the matrix containing 4.4 kt diamond, the concentration of 100%, including 3.3 kt diamond, the concentration was 75%. Volume concentration of said agglomerates in the volume occupied by the number of diamond and provides that when the volume of the total volume of the diamond 1/4 concentration of 100%. Increasing the concentration of diamond is expected to extend the life of the blade, because of the increased concentration of each piece of diamond is reduced, the  bandsaw blades average cutting force suffered. However, increasing the depth of the blade will increase the cost, so there is a concentration of the most economical, and the concentration with VS shear rate increases.
(3) binding agents head hardness: In general, the higher the hardness of the binding agent, the stronger the resistance to abrasion. Thus, when a large rock abrasive cutting, the bonding agent should be high hardness; when the cutting of soft rock material, the hardness of the binding agent should be low; when large and abrasive cutting hard rock, the diamond tool manufacturer  binding agent should be moderate hardness .
(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. Because force and temperature effects caused by diamond saw blade worn to donate damage.

diamond tools applications

Natural diamond tools currently used mainly for copper and copper alloys and gold, silver, rhodium and other diamond bandsaw blades  precious metals, and special parts of the ultra-precision mirror processing, such as a disk recorder, an optical mirror, a polygon mirror and the second curved mirror and so on. But its crystalline anisotropy, the tool expensive. PCD performance depends on the content of diamond grains and cobalt, cemented carbide tool life (WC substrate) of the tool 10 to 500 times. Mainly used for a variety of non-ferrous metals such as turning of aluminum, 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 rate and depth of cut depends on processing conditions and the drum wheels  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 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  concrete cutting blade their alloys and diamond has a high interfacial energy between. Diamond is difficult to be generally low melting point 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.

machine with a diamond tool installation

Machine using a diamond cutter installation and alignmentAccording to select the appropriate size of the  workpiece using a diamond cutter machine. Clean the machine work table, positioning T-slot straight groove side of the bottom plane of diamond tools and locating key blocks positioned side, here are some of its steps.
 The first step: the base of the machine with a rotary tool with a diamond placed in the desired position on the  sds drill bit  machine table, as shown in Figure 1 a 67. Turn the dial on the bottom surface of the base block embedded positioning key intermediate T-slot straight slot. Check the wheel base of the 0 ° engraved lines and vise body aligned with the zero line, if you need directions rotated 90 jaws installation, concrete diamond blade can be zero on the line and turn
Machine flat diamond tool use(1) machine flat diamond tool installation machine flat diamond tool workpiece clamping, the  ceramic tile saw first machine using a diamond cutter mounted on the machine table, positioning keys embedded workbench positioning groove clamping screws fixed.2) machine flat diamond tools used should be selected according to the workpiece dimensions, such as clamping a rectangular workpiece, the workpiece length 180mm, height 50mm, width of 100mm, at this time, you can choose size of 200mm machine flat diamond tool . In a machine with a flat diamond tool clamping workpieces of different shapes can be designed several special jaws, as long as the  circular blades replacement of different forms of the jaw, can adapt to a variety of shapes of the workpiece, machine flat to expand the use of diamond tools range.(3) machine flat diamond tools used in a fixed workpiece clamping jaw and movable jaw, between the parties the exclusive use of the handle head sets, hand lever handle clamp the workpiece. Note that you can not use heavy percussion handle to avoid damage to the machine using a diamond cutter screw and nut. Use rotary chassis allows machine flat diamond tools required to rotate in a horizontal plane angle angle of rotation can be zero line and rotary clamp seat on the scale to determine the chassis.