CVD Diamond Core

CVD diamond, also known as chemical vapor deposition diamond, is a pure diamond deposited on the surface of a solid substrate with carbon-containing gas under high temperature and low pressure conditions. CVD diamond has high hardness, good wear resistance, low friction coefficient and high surface finish. It can be made into wire drawing dies with 0.02-1.0mm aperture for drawing stainless steel wire, tungsten wire, molybdenum wire, copper wire, aluminum wire, etc. Since CVD diamond does not contain any binder, compared with PCD, CVD diamond wire drawing dies show higher wear resistance, corrosion resistance, thermal conductivity and thermal stability. The disadvantage of this product is that its toughness is not as good as that of PCD, its impact resistance is weak, and it is easy to crack. The technical conditions in the preparation of the wire drawing die are also stricter than that of PCD.