Diamond grinding wheel and natural abrasive superhard abrasive (diamond and cubic boron nitride) grinding  wheel;

The shape can be divided the level grinding wheels, bevel grinding wheel, cylindrical grinding wheel, cup wheels, disc wheel and so on; binder can be divided into ceramic grinding wheel, resin grinding wheel, rubber wheel, metal wheel. Of the main parameters of the grinding wheel abrasive, viscosity, hardness, binders, shape, size and so on.
(1) abrasive and selection
The abrasive is the main raw material for manufacturing wheel, it bears a cutting work. Therefore, the abrasive must be sharp, and have a high hardness, good heat resistance and a certain degree of toughness.
(2) particle size and selection
The particle size refers to the size of the abrasive particle size. The granularity is divided into two types of abrasive grains and powders. For the abrasive particle size of greater than 40μm, referred to as the abrasive grains. Screening method, grade, size number to the number of the holes in the abrasive through the sieve per inch. 60 # abrasive said its just the right size through 60 perforations per inch screen. For the abrasive particle size of less than 40μm, called fine powder. Graded by microscopic measurement, W and figures behind the grain size number, the W values ​​represent the actual size of the fine powder.
(3) binding agent and Selection
Grinding wheel for bonded abrasive material to said binding agent. Grinding wheel strength, impact resistance, heat resistance and corrosion resistance is mainly determined by the performance of the binding agent.
(4) the hardness anddiamond grinding.

The hardness of the grinding wheel is defined as the ease of shedding of the abrasive grains on the surface of the grinding wheel in the grinding force. Soft, which means that the hardness of the grinding wheel abrasive grains of the grinding wheel is easy to fall off, hard, which means the hardness of the grinding wheel abrasive grains is more difficult to fall off. The hardness of the hardness of the grinding wheel and abrasive are two different concepts. With an abrasive grinding wheel can be made of different hardness, it is mainly determined by the performance in the binding agent, quantity and grinding wheel manufacturing process. The significant difference of grinding and cutting wheel has a "self-sharpening", select the hardness of the grinding wheel, in fact, is to choose the self-sharpening wheel, also sharp abrasive particles do not fall off too early, and do not blunt not fall off .