Features of diamond cutting tools
Ceramic bonded diamond grinding wheel has the common characteristics of diamond and ceramic bond. Compared with ordinary corundum and silicon carbide grinding tools, its grinding force is strong, the grinding temperature is relatively low, and the wear of grinding tools is relatively small; It can adapt to the action of various cooling liquids; During grinding, the grinding tool has good shape retention and high precision of grinding workpiece; There are many air holes in the grinding tool, which is conducive to chip removal and heat dissipation during grinding, and is not easy to block and burn the workpiece; The self sharpening property of the abrasives is relatively good, the dressing interval is long, and the dressing is relatively easy. Therefore, the use of ceramic bonded diamond grinding wheel is increasing in some developed countries.
Selecting reasonable process parameters, the grinding efficiency of ceramic bonded diamond grinding wheel is higher than that of metal bonded grinding wheel, the wear ratio is very small, and the processing cost is low. Therefore, the grinding efficiency of single crystal diamond with ceramic bonded grinding wheel can be greatly improved. In terms of grinding PCD tools, because the resin binder is relatively soft, it is easy to deform during grinding, so it cannot effectively grind PCD tools; Due to the strong binding ability of metal bond to abrasive grains, the self sharpening of grinding tools is poor, and the grinding efficiency is low. Moreover, the metal bond grinding wheel will cause serious damage to the edge of PCD tool; Considering the grinding efficiency, the durability of grinding tools and the machining quality of the workpiece surface, the ceramic bonded diamond wheel is a suitable choice for grinding PCD tools.
