Polycrystalline cubic Boron Nitride (PCBN)

The cubic Boron Nitride is a hexagonal lattice of boron nitride （h-BN）by High temperature and high pressure process, the role of polymerization by the catalyst into high-density cubic lattice (c-BN) single crystal, Its hardness second only to the diamond 7000 ~ 9000HV. Boron, nitrogen atoms, it has better than the thermal stability of the diamond and iron group metal chemical inertness. Because it is insoluble in iron, nickel, and other superalloys, cBN is suitable for processing ferrous metals such as iron and nickel. Mainly for the manufacture of abrasive and cutting tools, polycrystalline c-BN drilling and grinding tools for mechanical steel, diamond drilling and grinding tools are different from aluminum, pottery and glass. Polycrystalline cubic Boron Nitride PCBN (Polycrystalline cubic Boron Nitride) of the isotropic polycrystalline block coating can be made of tooling, can be made into a whole or with the hard alloy composite as a whole of the blade, and then welding or mechanical clamping made of various uses of cutting tools, they are known as cBN cutting tools.