PDC Cutteris actually a complete product made from a polycrystalline surface layer of synthetic diamond and a tungsten carbide under a high temperature and 

high pressure process. It has the characteristics of high hardness and good wear resistance. It is widely used in oil drilling, geological exploration, coal mining

drill bit and machining tools.

The crystal orientation of the diamond polycrystal is superior to that of the natural diamond, that is, the non-directional arrangement between the crystals makes it 

have higher abrasion resistance and strength than the natural diamond, and has no directional segregation. Natural diamond is easy to break due to its anisotropy,

so it is easy to break, so its sharp corners are easy to be broken, blunt, rounded, and the principle of lithology is not cutting but only grinding and squeezing. The

effect, so the efficiency of natural diamond inserts can not last. The composite drill bit has a self-sharpening effect in both the blade surface and the cutting edge, and

the cutting edge is sharp, so that high-speed drilling can be achieved at a lower drilling pressure and lower rotation speed, and can be maintained throughout the use 

process. The effect of high speed drilling. In addition, since the tungsten carbide layer of the PDC cutter provides impact strength, the composite has both the hardness 

and wear resistanceof the polycrystalline diamond; and the structural strength and impact resistance of the tungsten carbide. The wear process of the composite is actually

a process in which the diamond polycrystalline crystal is continuously peeled off, and the new sharp small crystal is continuously exposed to make the composite self-sharp.