Abrasives are tools for grinding, grinding and polishing. Most abrasives are synthetic abrasives made of abrasives and binders, but also natural abrasives made directly of natural rock. Abrasives are not only widely used in machinery manufacturing and other metal processing industries, but also used in grain processing, paper making industry and the processing of ceramic, glass, stone, plastic, rubber, wood and other non-metallic materials. In the process of using the abrasive tool, when the abrasive particle is blunt, the abrasive particle is partially or completely detached from the abrasive tool due to its own part breaking or binder breaking, and the abrasive on the working surface of the abrasive tool constantly appears new cutting edge, or constantly reveals new sharp abrasive particle, so that the abrasive tool can maintain the cutting performance in a certain time.