Preparation of edge-hole co-distributed brazed diamond microstructure end-grinding wheel and its grinding performance on alumina ceramics

Due to the easy graphitization of diamond during high temperature brazing and the limitation of brazing process, it is still difficult to prepare brazed diamond grinding wheels with finer particle size. In present study, the brazed diamond grinding wheels with different textures, which mainly consisted of edges and holes, were prepared. On coarse diamond grits brazed on the wheels, the textures were micro-machined by pulsed laser. The grinding performance of textured diamond wheels on alumina ceramic was examined. Effect of the textures on grinding forces, surface roughness and wear of diamond girt were compared. It is found that compared with traditional brazed diamond grinding wheels, the micro-edge wheels, which have been curved by lasers, have 37% to 51% lower grinding forces and 18% to 25% smaller roughness. Specially, the wheel with 1∶1 number ratio of edges to holes performs the lowest grinding force and the smallest surface roughness.