Abrasive in use process, when grits blunt grinding, because the grits department or in combination with a fractured itself agent fracture, grits on from local or fall off completely abrasive, abrasive abrasive surface and work on the cutting edge of new constantly, or constantly show new sharp grits, make the abrasive in a certain time cutting function can keep. The self sharpness of abrasive, abrasive tool match with the general is raised characteristics.

As early as in the neolithic age, man has been used natural stone processing stone knives and ShiFu fractures, Angle, the teeth and the tools; In 1872, in the United States with a natural abrasive and clay from the burned combining ceramic grinding wheel; Around 1900, artificial abrasive coming out, using artificial abrasive manufacturing all kinds of abrasive heels produce, for grinding and mill ?