Abrasives in use, when the abrasive blunt, partially due to its fragmentation or abrasive bond breakage, abrasive grit from the partial or complete loss, but the continuous work cutting disc china surface abrasives emergence of new cutting edge, or continuously exposing new sharp abrasive grains, so that the abrasive in the cutting performance can be maintained within a certain time. This self-sharpening abrasive, is abrasive tool compared with the general prominent feature. Abrasives except in machinery manufacturing and other metal processing industries are widely used, but also for the processing of food processing, paper industry and ceramics, glass, stone, plastic, rubber, wood and other non-metallic materials. Source of their raw kind of abrasive, abrasive natural and artificial abrasive categories. Commonly used in machinery tile cutting wheels industry is only natural abrasive natural stone. Artificial abrasive characteristics according to the basic shape and structure of the points, there is grinding, grinding, stone, sand tile (above collectively bonded abrasives) and coated abrasives classes. In addition, it is customary also put abrasives abrasive as a class. Table 1 lists the types and uses of artificial abrasive. Abrasive used by abrasive divided into ordinary abrasive abrasive and superabrasive abrasive. The former general with corundum and silicon carbide and other abrasives, which are made of diamond and cubic boron nitride and other superhard abrasive. In addition, there metal cutting wheels are some special varieties such as sintered corundum abrasives and so on.
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