abrasive solid binding agent to form a certain shape common

By ordinary abrasive abrasive , and has a certain strength abrasive. Generally abrasive, binder and pore structure, these three parts are frequently referred to as the three elements of abrasive.
Abrasive abrasive cutting action play. Binding  standard abrasives agent is a solid form of the abrasive loose abrasive materials, with inorganic and organic types. Inorganic binder with ceramic, magnesite, sodium silicate and the like; organic a resin, rubber and shellac. One of the most commonly used is a ceramic, resin and rubber binding agent.
Holes in the ground when debris from the role of the chip and the chip, and can accommodate coolant, helps grinding heat dissipation. To meet the requirements of certain special processing, the pores can be impregnated with certain fillers such as sulfur and paraffin, so as to  cutting and grinding disc improve the abrasive performance. Such fillers, also known as the fourth element of the abrasive.
Means a common abrasive abrasive characteristics of the project are: shape, size abrasive, grain size, hardness, structure and bonding agent. Abrasive abrasive hardness refers to the external force from the abrasive surface of the shedding of degree of difficulty, it reflects the strength of binding agent holding abrasive.
The hardness of the abrasive agent is grinding wheel  added depends on the amount of binding and the density of abrasive, abrasive grains easily fall off indication low hardness; vice versa, which means high hardness. Hardness level is generally divided into super-soft, soft, medium soft, medium, medium-hard, hard and superhard seven magnitude, from these levels can be subdivided in a number of small magnitude. Abrasive hardness measurement methods are more commonly used hand cone, mechanical cone method, Rockwell hardness measurement method and sandblasting assay.