Grinding wheels is the main raw material for manufacturing abrasive grinding polishing wheels, which bears the cutting work. Therefore, the abrasive must be sharp and have high hardness, good heat resistance and a certain degree of toughness. Grinding wheels are central agents in combination with abrasives and abrasive made ??through a circular hole. Grinding wheels by ordinary abrasive solid binding agent to form a certain shape (mostly circular, the central through-hole), and has a certain strength abrasive. Which generally consists of abrasives, binders and porosity. Abrasive grinding wheel is the largest amount, the most widely used method of using face when using high-speed rotation, can be cylindrical metal or non-metallic workpieces, inner circle, plane and various type surface like coarse, semi-fine grinding and grinding and grooving and cutting and so on.