metal cutting discs are grinding the most important one class abrasive. Metal cutting discs binding agent is added to the abrasive, the porous body by the pressure of the blank, made of dried and calcined. Due to the abrasive, combining different techniques and manufacturing characteristics Metal cutting discs vary widely, so the grinding process quality bench grinder wheels, productivity and economy have an important impact. Characteristics of Metal cutting discs are mainly determined by the abrasive particle size, binder, hardness, structure, shape and size and other Stone cutting wheels factors. Metal cutting discs are binding agent by ordinary abrasive solid form a certain shape (mostly circular, the central through-hole), and has a certain strength abrasive. Which generally consists of abrasives, binders and pores form, these three parts is often called abrasive three elements. According to different classification binding agent, a common ceramic (binding agent) wheel, resin (binder) wheel, rubber (binding agent) wheel. Metal cutting discs are abrasive in the largest amount, the most widely used method of using surface, high-speed rotation, can cylindrical, inner circle, plane and a variety of type faces and other metal or non-metal workpieces when using coarse grinding, semi-refined grooving and grinding and grinding and cutting and so on.