The coarse grain size should be selected for the workpiece with large machining allowance and high grinding efficiency. When the machining allowance is small and the surface roughness value is low, the fine grain size should be selected. For example, P16-P24 abrasives are used for rust removal of hu

The ceramic abrasive with sol-gel method belongs to sintered abrasives. The grain size is very small, only 100-500mm. It is only a few million of the crystal size of ordinary corundum abrasives. A grain size #46 ceramic abrasive contains hundreds of millions of crystals. When grinding, the tradition