Natural diamond tool production

Currently, single crystal diamond, PCD (or PCD / CC), and were successfully used for CVD diamond turning, boring tools, drills, reamers, milling cutters, molding

knives and other cutting tools Cutting part of the production materials.
Varieties of diamond material must be based on the nature of the material being processed and processing requirements to select, in addition to meet the technical

requirements, but also to meet the economic and environmental performance requirements.
PCD and PCD / CC material
PCD and PCD / CC is the most commonly used in the production of diamond material, it applies not only usually machining fields, but also widely used in automobiles,

motorcycles, high-speed trains, petroleum, chemical, construction, wood processing, and aerospace and other industrial sectors. In the automotive and motorcycle

Car field, PCD and PCD / CC suitable for machining aluminum engine piston skirt, pin hole, cylinder blocks, transmission, carburetor and other wear parts. Most of

these components are relatively high silicon content (Si> 12%) of aluminum composite material of high hardness Hard

Particles (such as high hardness of SiC 3000 ~ 3500HV) distributed in the alloy matrix, and if the abrasive wheel as the cutting edge of the tool be abrasion and

impact from the effect of second-hand oil press, leaving the cutting edge wear quickly. The higher the hardness of hard particles, particles feet

Inch larger, the more the number of particles, the tool wear faster. Therefore, it is difficult using conventional machining of carbide cutting tools, tool life is

very low or impossible to use. Diamond is the world's hardest substance known, the actual use of proven, it is the re-processing of aluminum

The best tool material composite material.
With PCD diamond machining aluminum matrix composites, its cutting speed of up to 800 ~ 1000m/min, tool life is several times higher than the carbide or even several

times the surface roughness value of up Ra0.025 ~ 0.012μm. Figure 2 shows the drilling process with PCD tools 20% SiCυ

The aluminum matrix composite spiral pump casing application examples.
With PCD (or PCD / CC) tooling carbon fiber and glass fiber reinforced plastic (FRP), the chip into a powder, cutting temperature is low, and the length of class K

carbide cutting tool 10 times, and not to hard wear carbide tool 1/3.
PCD (or PCD / CC) also applies to the processing tool after a burn-resistant carbide and non-metallic materials, such as ceramic, rubber, graphite, glass and various

wear-resistant timber.
PCD tool performance depends primarily on its application and the process involved, but the choice of the appropriate grade and particle size can also affect it.

Different varieties of PCD inserts, due to its composition of different cutting is very different, the choice of subject

Attention.
Currently PCD inserts Carbide did not have a unified international classification, each has its own production plant varieties and grades, to be used to select the

reference sample manufacturers.
Grind grain size greater the better the tool life is higher, but the cutting edge is rough, poor quality Diamond blade , made of high-precision cutting tools is difficult;

mechanical processing of grain generally used as generic brands; fine-grained tool blunt edge of the cutting edge radius is small, easy processing of

Good surface quality. Thus continue to refine the current grain polycrystalline and even 0.5μm less than 1μm fine grain, to be based roughing and finishing

processes, such as different requirements, use of different grain sizes.