Material for applying a wear-resistant coating of the diamond bit body by detonation method

This article discusses carbide tungsten carbide materials for detonation coating of the diamond bit body. Various properties of these materials with their different composition are considered. Based on the above analysis, taking into account the most important characteristics (adhesion of the sprayed material to the surface of the bit body, microhardness and wear of the carbide coating) the material most suitable for surfacing the body of a six-blade PDC chisel has been selected. The coupling of the selected carbide material (VK 12) with the surface of the bit body during detonation spraying with the required coating thickness of 200 microns is presented.