Ultra-smoothness grinding of silicon carbide in depth of cut of 1mm

In our previous researches, the newly devised ultra-smoothness grinding method is proposed and ascertained to be useful for finishing fine ceramics to the ultra-smoothness surface below 30 nm(Rz) or 5 nm(Ra). In the research, the influence of depth of cut on ultra-smoothness grinding of a silicon carbide ceramic is examined. The depth of cut ranges from 5 micro-meters to 1 mm. In the ultra-smoothness grinding method, it is found possible to finish the silicon carbide ceramic to high smoothness surface at even the depth of cut of 1 mm using metal bonded diamond wheel of coarse grain size of #140.