Diamond tools for a wide variety

Diamond cutter high hardness, long life, has been widely used in various manufacturing industries, the following is a brief look at the diamond tool manufacturing materials
High hardness and wear resistance of diamond cutting edge is very sharp, the blade roughness value is small, low friction GUSHI carbide tipped saw blade  coefficient, good anti-adhesion, high thermal conductivity, easy to stick the knife when cutting and BUE, machined surfaces good quality. In the processing of non-ferrous metals, energy efficient processing of non-ferrous metals and non-metallic materials, such as copper, aluminum and other nonferrous metals and alloys, ceramics, un-sintered carbide, various fibers and particulate reinforced composites, plastics , rubber, graphite, glass and a variety of wear-resistant timber (especially solid wood and plywood, MDF and other composite materials). 1, variety, product series: domestic diamond products presented species diversity, product refinement, application specialization trend. General scale enterprises have dozens of product specifications, slightly-scale enterprises have hundreds of product specifications, larger enterprises  GUSHI sanding discs with thousands of product specifications and the products can be customized according to user requirements. 2, the product according to user requirements are divided into two classes: the use of diamond tools, habits and cost factors have been artificially divided into two distinct series: First, a larger amount, the price is relatively low DIY products, such products have a greater market; Second, the main high-end professional products for the international market. Due to recent rapid increase in Chinese production and quality diamond, diamond products to the continuous improvement of production technology, high  GUSHI carbide drill bits levels of manufacturing diamond tools products has made significant progress, and the price advantage is obvious, professional products in the international market competitiveness has enhanced.

What is the working principle of diamond cutting tools

Workpiece rotation, straight or curved diamond tools for cutting moves in the plane. General lathe turning, turning round to internal and external cylindrical workpiece, face, conical surface, forming surface and thread and so on. Turning external cylindrical surface, turning along the axis of rotation is parallel to the direction of movement of the workpiece. Turning on or off the end face of the workpiece perpendicular to the turning direction of the horizontal axis of rotation of the workpiece movement. If the turning trajectory of the rotation axis of the workpiece at an oblique angle, the conical surface can be processed. Turning shaped revolving body surface, can be shaped tool tip trajectory method or methods. When turning, the workpiece is rotated by a spindle primary movement; holder for turning the turret feed movement. Cutting speed v is the linear velocity of the workpiece surface at the point of contact with the tools rotating (m / min); cutting depth of each cutting stroke of the workpiece is to be machined and the machined surface of the vertical distance (mm) between the surfaces, but in the compared with vertical contact length in the feed direction of the workpiece when turning and turning off and forming (mm). Feed each piece represents a turn when turning the feed direction of the displacement (mm / rev), can also be turning feed per minute (mm / min), said. High-speed steel tool used for turning ordinary steel, cutting speed is generally 25 to 60 m / min, carbide diamond tools up to 80 to 200 m / min; using coated carbide turning up at the highest cutting speed 300 m / min.
    Turning it normally roughing and finishing (including semi-refined car) categories. Rough sought without reducing GUSHI concrete saws  the cutting speed conditions, using a large depth of cut and a large amount of feed to improve the efficiency of turning, but only up to precision IT11, the surface roughness of Rα20 ~ 10 microns; semi-finishing and finishing maximize the use of high-speed and a smaller amount of feed and depth of cut, precision up IT10 ~ 7, the surface roughness of Rα10 ~ 0.16 microns. In the high-precision lathe with a fine grind of diamond tools repair speed finishing non-ferrous metal parts, precision can reach IT7 ~ 5, the surface roughness of Rα0.04 ~ 0.01 microns, which is called the turning mirror turning. If the cultivation or 0.1 to 0.2 microns concave convex on the diamond cutting edge tools, the  GUSHI masonry drill bits surface unevenness is generated for turning the rows of micro-electrode stripes, damask luster present in the diffraction effect of light, can be As a decorative surface, which is called Rainbow turning face turning. When turning, if the rotation of the workpiece, while also turning speed ratio corresponding (tool speed is generally several times the speed of the workpiece) and the workpiece rotating in the same direction, can change the tools and the workpiece relative to the trajectory, producing the polygonal cross-section (triangular, square, hexagonal prism, and the like) of the workpiece. If the diamond tools vertical feed, while each turn relative to the workpiece, tool GUSHI sanding discs  holder attached to a periodic radial reciprocating cam surface finish can or other non-circular cross-section. In Relieving lathe, similar works can be processed in some multi-tooth cutter (such as shaping cutters, gear hobs) flank teeth, called shovel back.

Comparison with amorphous diamond CVD diamond grinding wheel

( 1 ) the difference between the amorphous diamond CVD diamond grinding wheel
   Amorphous diamond ( also called diamond-like carbon - Annotation ) is to adopt a carbon PVD coating deposition process . It has part of the diamond , but also has a part of SP2 carbon bond ; its high film hardness, but lower than the hardness of diamond films ; their  concrete polishing pads thickness than we usually deposited diamond film to be thinner . When machining graphite, amorphous diamond grinding tool life is 2-3 times uncoated carbide tools . Consistent contrast , CVD diamond deposition process is the use of pure CVD diamond wheel , tool life when machining graphite is 12-20 times carbide cutting tools , which can reduce the number of tool changes  diamond polishing tools to improve the reliability and precision machining sex .
( 2 ) diamond wheel life varies
  Like any other tool , diamond grinding tool life also varies , depending on the material to be cut , the choice of feed rate and cutting speed , as well as the geometry of the workpiece and the like. In general , processing of graphite diamond wheel tool life is 10-20 times uncoated carbide tools and may even longer in some cases . Thus , a tool can be done with almost any processing tasks without tool change due to tool wear and concrete ring saw  avoid the processing of the interrupt and recalibration , making it possible to achieve unattended processing. In the processing of composite materials , it is entirely possible to get a longer tool life. When it was reported in the processing of high-density glass fiber, carbon fiber composite materials difficult to machine , diamond grinding tool life up to 70 times is not coated carbide tools .

Ultra-thin cutting wheels grinding characteristics and Precautions

Ultra-thin cutting wheel is mainly used for fine grooves and cut close , generally use deep creep feed grinding method. With grinding depth, feed small speed, large contact area of the grinding wheel and the workpiece , narrow kerf , metal removal rate, high grinding precision, good surface quality and material utilization characteristics. The  ore bits for concrete general rule is as follows : 1 ) the overall thickness of the thin -cut piece wheel ( mostly in 0.5mm or less ) , small diameter (20-100mm), fine granularity, high dimensional and geometric precision, light weight , general conditions in the high- speed next use . Average speed of 5000-40000 rpm. 2 ) . Cutting wheel base body mostly thick (0.5-2mm), diameter (100-200mm), coarse granularity , low accuracy , generally used for low speed large depth of cut conditions. Average speed of 3000-10000 rpm. 3 ) ultra-thin cutting wheel to use more fine-grained , and generally having a thickness thinner abrasive particle size accordingly thinning, good surface quality . However, the finer the particle size of the abrasive cutting sharpness drop corresponding to  diamond bandsaw blades the feed rate is reduced accordingly to adapt the particle size of the abrasive machinability 4 ) . Thin cutting wheel cutting depth generally by the user to set the cutting element , the cutting mostly using creep feed grinding process , the depth of a cut to the . As the cutting wheel so thin, poor cutting conditions ( more than 3 face contact with the workpiece ) , making it difficult to heat , and therefore to increase ( flow, pressure ) cooling the cutting area. 5 ) When the cutting wheel at the user has just appeared on the machine does not move or cut the workpiece chipping , the proposal to increase the cutting speed or decrease feed rate ; When the cut after a period of time does not move or chipping , it is recommended to use Whetstone appropriate granularity on the surface of the blade wheel to adjust its sharpness . 6 ) . Workpiece surface quality and cutting and thin cutting wheel performance is mainly related to abrasive particle size , particle size finer surface finish  masonry drill bits processing the better . Simultaneously with the workpiece material , hardness, cutting consumption , machine condition , processing requirements and other factors are also related. General before 7 ) thin cutting wheel and the factory has been shaping the blade , users can directly use . If you need further surgery, recommended green silicon carbide or corundum white stone, grain size selected coarse granularity than the cutting wheel , No. 1-2 ; If the user needs to further open the blade edge , or use some suggested green silicon carbide or corundum white Whetstone , particle size selected fine grain size than the cutting wheel or 1-2 numbers to the same number . 8 ) Cutting general but also with the material to be processed , hardness, precision machining requirements related to initial use is recommended to use the best in the user's original condition , do not easily change cutting parameters . 9 ) user conditions also affect major factor cutting performance , especially in machine tool spindle axial vibration , runout, parallelism directly affects the flanges , etc. cutting wheel balancing precision cutting accuracy.

Suggestions to improve the safety of diamond saw blades

Industrial production, there is a certain risk when using a diamond saw blade tool for the protection of life and attention, its security more and more manufacturers and users attention.
2.1 The new EN13236 standard
On the development of a set of safety standards EN13236 safety performance for superhard materials, tools, and we firmly based on years of product safety awareness and stringent safety  metal grinding wheel testing system security diamond saw 2.2 - 2.2.1 recipe optimization improvements through the use of low- the oxygen content of the raw material powder, diameter 200 mm tiles Steel Institute tablets (1.6 mm thick blade, blade height 7 mm) mass pull teeth strength 15 ~ 20N · m, fully meet the EN13236 standard (12.5N · m), stable sales to the European market. 2.2.2 Process optimization - laser welding
The traditional high-frequency welding, bonding strength of the weld (especially at high temperatures) is not high enough, head injuries and other accidents sawing fly collapse-prone process, not the safety and reliability of the blade. The laser beam welding is used as the laser energy is focused, using the mechanism of penetration welding, the molten tip of the buffer layer and the substrate, to form a solid weld even under the blade, drill case without cooling water, and ensures a high weld strength, to ensure the safety of use. Our company truly the heart of the glass  4 inch circular saw blade  rod cutting machine is your company's diamond saw, now dull, and for the price not lower blade, in order to save costs, would like to ask you, what materials grindstone can be re-used to the blade the blade?
Received such a problem, a little depressed, diamond saw blades are generally toothless,
The hardness of diamond is very high (ranked first), so nothing can be worn almost touch it, you can only use a diamond grinding wheel grind slowly, but it is difficult to grind, like the original sharp edge. Encountered such conditions, usually for blade.
Saw the matrix, the matrix of diamond saw blades, alloy saw blade matrix and packaging business, the company is equipped with the stress detector, stress straightening machine, grinding tools, hardness tester, shearing, leveling machines, hydraulic machines, presses, CNC lathes, flat round grinder, and other professional production equipment  hole saw blades and testing equipment. In order to improve enterprise management level, stable blade, saw the matrix, the matrix of diamond saw blades, blade alloy matrix product quality, continue to meet customer demands and expectations, the company strictly regulate the quality and management requirements.

The main analysis of cutting stainless steel blade introduces the use of materials

Stainless steel ( pipes, profiles , etc. ) , although difficult for processing materials , but its characteristics are not very hard, mainly stainless steel strong adhesion , chip easily adhere to the serrated blade , the cutting conditions worsen , accelerate the blade dulls speed , and therefore difficult for processing classified material . Processing of  metal grinding wheel stainless steel special saw blade, using a standard high-speed home country tungsten and molybdenum alloy steel production, especially for stainless steel milling. Also can be used with ordinary steel , aluminum, copper , plastic and other cutting , milling , slotting .
 Special stainless steel cutting blade materials used
Tungsten and molybdenum high speed steel, cobalt- tungsten-molybdenum alloy steel high speed (HSS-DMO5, HSS-C05)
Special stainless steel cutting blade stock specifications :
Material : HSS-DM05 / HSS-Co bore diameter * thickness * Unit : MM
Plus multi-piece welded carbide saw blade on  carbide drill bits the saw blade matrix , collectively scraper. General since the beginning of the scraper blade outer scraper blade and teeth , the cutting blade is generally used for hardwood , wet outside scraper generally used for cutting wood , tooth scraper used for trimming or edge blade , but can not be generalized . Rui Shi to multi-chip saw blade , for example, the general design of the blade 10 inches below the number of 2-4 , in order to allow the blade play the biggest role , mostly designed for outer blade , 12- inch blade design and the number of 4-8 inner and outer blade scraper each half , symmetrical design . Multi-chip saw blade with scraper is a trend of foreign companies before the invention of the earlier multi-chip saw blade with a blade . When cutting wet wood diamond hole saw  and hardwood , in order to achieve better cutting effect , reducing tooth paste blade burning piece of machinery to increase chip capacity, reduce the number of grinding and increase durability. However , multi-chip saw blade with a blade grinding difficult , generally can not be grinding equipment , the price is also relatively high .

Classification of diamond saw blades

Widely used in the processing of stone , ceramics and other hard and brittle materials, diamond saw blades made ​​up of two parts ; . Head substrate and the supporting substrate is the major portion of the bonding head , and the head is cut from the course part , the head , in use, will be consumed continuously while the substrate is not , since the cutting head is able to effect because it contains diamond, diamond as the most concrete ring saw  rigid material, which cutting head friction the object to be processed while the metal inclusions in the diamond particles from inside the head . During use , the metal matrix and diamond along with consumption, the ideal situation is generally more metal carcass consumed faster than the diamond , so can guarantee the sharpness of the tip of the blade while ensuring a longer life , the middle part is generally Mn steel substrate . outer part is heads.
Classification of diamond saw blades
More and more industries use diamond saw in the production process , with the breakdown of industry consolidation , the type of diamond saw blades are becoming increasingly refined.
I. manufacturing process categories :
1 , sintered diamond saw blades : two of cold and hot sintering sintering , pressing and sintering .
2 , welding diamond saw : two stars frequency welding and laser welding , high frequency welding head through the medium of high temperature to melt and the substrate are welded together , the laser welding head by a high temperature laser beam in contact with the substrate forming a metallurgical bond edge fusion .
3 , electroplated diamond saw blade : It is diamond hole saw  attached to the head by an electroplating method powder on the substrate .
Second Appearance Category:
A continuous edge blade : Continuous serrated diamond saw, generally produced by sintering method , commonly used as a basis for bronze binder matrix material, cutting water to be added to ensure that the effect of cutting and a laser head cutting kinds of useful gap .
2 , blade -type blade : serrated disconnected, cutting speed, suitable for dry and wet cutting methods.
3 , turbine -type blade : 1,2 combines the advantages of the previous two , the sawtooth -like uniform continuous presence turbo punch , improved cutting speed and increase service life.
Different materials selection of different metal grinding wheel  types of diamond saw blades , different powder formulations for different material properties , the quality of materials and products , effects, and even the costs and benefits of the pass rate direct impact . Factors affecting the efficiency and life of saw blade has a particle size , concentration, binding agent , and the hardness of the diamond sawing process parameters and the like . It has cut the number of blades can be wire-speed , cutting feed rate and concentration .

Grinding wheel used to improve the performance of the basic parameters can not be discounted

Carry on the work of the grinding process , to choose the right material , depending on the hardness of the grinding wheel grain size of the workpiece, in addition to these commonly used during the grinding wheel a few basic parameters , but also pay attention to , so masonry saw blades   as to maximize the improvement of grinding efficiency.
Arc a diamond wheel in contact with the workpiece ( unit : mm).
2 . Wear ratio .
3 grinding energy . Is the energy per unit volume ( or weight ) of the metal consumed removed. Its value is smaller, the better the material can be grinding , metal removal rate is relatively higher .
4 diamond wheel line speed . ( Unit : M / S)
According to grinding machine spindle speed diamond wheel speed can be drawn , then the basis of its diameter , it can draw its line speed. Wheel manufacturers are generally of a standard line  granite core bits speed , i.e. the linear velocity , diameter, rotational speed are related.
5 in the axial cylindrical grinding feed rate ( Unit : mm / r)
According to the width of the wheel , using the appropriate amount of axial feed , in the process , you can ensure efficient grinding efficiency at the same time , to get better results. If coarse steel , feed rate of 30% to 70% of the width of the coarse castings , feed rate of 70 % to 80 % of the width , while grinding , feed rate , compared with 10% of the width to 30 %.
6 inner axial cylindrical grinding feed diamond grinding wheel  rate (unit : m / min). Axial and axial feed rate is the feed rate and workpiece speed related .
7 workpiece speed ( unit : m / min). This is the diameter of the rotational speed of the workpiece and the workpiece related .
Only in a variety of relevant factors are considered comprehensive , and will make the grinding wheel to achieve the best results....

grinding fluid supply requirements more effectively

By spray method for increasing the pressure (1MPa above), increasing the grinding fluid jet velocity, airflow speed rotating grinding wheel broke, the grinding fluid flow into the grinding zone  diamond blades effectively, rapidly remove heat, improve the grinding effect. Used cylindrical grinding nozzle structure, the use of nozzles spaced high-speed airflow baffle will ensure the smooth grinding fluid injected into the grinding zone, while preventing grinding fluid splash.
 When the wheel speed is high, the wheel periphery airflow also strengthened, then you can take appropriate measures, such as adjusting the grinding fluid nozzle orientation. In the air force concrete diamond blades  jet force and effect, so just grinding fluid is injected into the grinding zone; mounting angle of the nozzle spray liquid should just make some up blocking airflow, partially into the grinding zone. Furthermore, you can increase the injection pressure and grinding fluid injection amount, reducing the increase of the nozzle outlet cross-sectional area and the nozzle width.
 High-speed grinding, grinding fluid supply requirements more effectively, use reflective supercharger. When an ordinary pressure grinding fluid from the tube into, sprayed onto the wheel surface through holes, grinding fluid speed centrifugal force is reflected back diamond core drills  booster bottom. The bottom of the grooves and ribs, grooves and the grinding fluid turbulence vortex, at the top of the convex rib dynamic pressure generated from the surface toward the wheel washing action, the cooling effect is significant flushing. The gap of the grinding wheel surface ribs equals 1.5 ~ 5mm.

diamonds and synthetic diamonds difference

Crystal habit
Synthetic diamonds often: cube, octahedron, and both poly shape
Natural diamonds often: octahedron, rhombic dodecahedron, and both poly shape, as well as common triangular flakes twins
Color
Synthetic diamonds often core drills  brown, and is often irradiated to change color into blue, orange, pink, brown and golden yellow
98% of natural diamonds are colorless - yellow series.
Surface and internal texture
Synthetic Diamonds: You can display or cross-shaped dendritic texture
Natural Diamond: The surface dents or Triangle Triangle common, often show the internal structure associated with the texture.
Magnification
Synthetic Diamonds: seed and phantom zone, various forms of metal inclusions
Natural Diamonds: no metal inclusions
Visible absorption spectrum
Synthetic diamond: None 415.5nm absorption lines obtained in liquid nitrogen under low temperature conditions can be measured less than 500nm 658nm absorption and total absorption peak
Natural diamonds: mostly 415.5nm absorption lines
UV fluorescence
Synthetic Diamonds: usually no cbn grinding wheel  fluorescence under long-wave, and shortwave under yellow-green, orange and yellow fluorescent, the "Maltese Cross zoning" phenomenon, while there are obvious phosphorescence
Natural diamonds: mostly under long wave blue and white fluorescent, weak or displaying inert under shortwave.
Cathodoluminescence instrument
Synthetic Diamonds: UV fluorescence distribution with similar characteristics, different growing areas show different fluorescence band
Natural diamonds: mostly irregular
Because natural diamond growth when the environment is changing at all times, however, the growth of synthetic diamond environment is static.
IR
Synthetic Diamonds: 1130 Cape beam absorption band
Natural diamonds: 1176,1282 beam absorption bands.
Conductivity
Synthetic Diamonds: some may have  diamond blade circular saw conductivity or thermal conductivity
Natural Diamond: In addition to Blue Diamond is a semiconductor outside, are not conductive, and is not magnetic.
Other
Such as exception birefringence

Hardness and wear resistance

Hardness and wear resistance: Diamond is saturated and having a directivity combine covalently crystal, it has brick saws  a veryHigh hardness and wear resistance, is the hardest known substance in nature.Application:
A mechanical processing industry
Diamond abrasive effects are grinding carbide tools. Sharpening carbide turning, every mill in addition to the metal needs to consume 1g GCAbrasive 4-15g, while the diamond consuming only 2-4mg.
2 Electronics Industry
Precious hard and brittle semiconductor materials such as silicon, germanium, gallium arsenide, etc. For small pieces made of a semiconductor device, to be cutAnd grinding. The metal drill bits  most appropriate method using a diamond cutting blade machining. With diamond paste polishing a semiconductor materialMaterial, not only efficient, but also can achieve the highest level of surface roughness Ra0.006um.
3 optical glass and stones processing industry
Before the use of silicon carbide processing optical glass, low efficiency, poor working conditions. Now all using diamond abrasive machiningIncluding cutting, nesting, cutting, milling and convex and concave surface grinding.
4 drilling and mining industry
In the oil, coal, metallurgy, geology exploration drilling and exploitation, extensive use of diamond drill bits.
5 construction and  metal grinding wheel building materials industry
Marble, granite, artificial cast stone, concrete building materials, cutting and grinding, the extensive use of gold ,Diamond tool.

how to choose the right blade

1, the blade selected basic data:
① saw blade outer diameter, the hole diameter;
② cutting object's material, shape and thickness;
③ cutter spindle speed.
2, saw the basis for selection:
International requirements for timber cutting line speed of 40 ~ 70M / S. The industrial sheet metal due to quality and sawn boards are better quality, better quality welding, cutting speed can exceed 80M / S, generic tablets, DIY film quality due to alloy and  sds drill bits sawn boards are poor quality, cutting speed should be relatively low Some.
Cutting speed is too small, the production efficiency; while rapid increase friction, heat stability decreased saws, alloy damage accelerated decline in the quality of the workpiece surface.
Cutting speed is too large, the  concrete saws friction heat increases, machine vibration, noise is also large, cutting stability decreased, the surface quality of the workpiece is decreased; cutting material of the alloy also increases impact resistance, chipping prone alloy phenomenon.
In practice, by reducing the diameter of the methods to reduce the cutting blade speed; speed to increase by increasing the cutting speed.
Second, on the question blade purchase price
Carbide also has high hardness (wear resistance) and brittleness (poor impact resistance) characteristics, the carbide saw blades  characteristics determine the most wear-resistant alloys are not accompanied by the best saws can get the longest use life. However, the object can be cut material properties, thickness, quality requirements to select a different hardness, strength of the alloy and the rational design of the tooth to achieve the best match between, get the longest life, the highest cost performance.

power tool is developing developing

The domestic market and the international market capacity, though not as large, but demand is still small, and most of them are professional power tools, the sales price is higher, and thus economic good, as long as the attention to product quality, and constantly consolidate and expand market share, it also has future, the industrial saw blades   same can survive and develop. As the domestic market for power tools power tool quality and brand more critical, whether it is electric tool dealers, or direct users to attach great importance to the quality and brand power tools. Therefore, the concrete polishing pads  market to the good quality, good brand power tool inclination increased. As long as companies, vendors with a good read on the market after market, electric tools need not worry about sales.
Domestic users of electric tools increasingly demanding high quality, especially for product efficiency, weight, life expectancy and other indicators are very concerned. In the  wet polishing pad construction industry, for example, on the quality of domestic power tools mainly reflected as follows: Hammer easy to heat, continuous working time is short, small hammer impact, vibration, the operator can be pressing on into the deep, drill easy to wear, easy to off and so on.
In order to better explore the domestic market, more and more electric tool manufacturers and distributors pay more attention to scientific and technological innovation, quality win, to consolidate and expand new markets. Therefore, the power tool market brand awareness and brand effect is more obvious, a lot of little strength and size of power tools dealers, all of the distribution of a good brand power tools showed high enthusiasm.
And as manufacturers continue to attach importance to corporate brand building, investments in technology, develop new products, electric tools industry to achieve a small power tools from a single product to a diversified, large-scale, modern, large-scale, innovative technology for electric tools Series product direction, and quickly occupied the market ground.