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Hardness Of Grinding Wheel

               The hardness of the grinding wheel refers to the difficulty of peeling off the abrasive grains on the surface of the grinding wheel under the action of grinding force. The hardness of the grinding wheel is soft, which indicates that the abrasive grains of the grinding wheel are easy to fall off and the hardness of the grinding wheel is hard to fall off. The hardness of the grinding wheel and the hardness of the abrasive are two different concepts. The same abrasive can be made of different hardness of the grinding wheel, it mainly depends on the performance of the binder, quantity and grinding wheel manufacturing process. The remarkable difference between grinding and cutting is that the grinding wheel has "self sharpness" and the hardness of the grinding wheel, in fact, is the choice of the grinding wheel's own sharpness, hope that the sharp abrasive particles do not fall off too early, also do not wear blunt not to fall off.Grinding wheel

              The general principle of choosing grinding wheel hardness is: When processing soft metal, in order to make the abrasive don't fall off prematurely, choose hard grinding wheel. When processing hard metal, in order to be able to timely wear blunt abrasive particles off, thus exposing the sharp edges of the new abrasive particles (that is, from the sharpness), the selection of soft grinding wheel. The former is because in the grinding of soft materials, grinding wheel work abrasive wear is very slow, do not need to be too early to disengage; the latter is because in grinding hard materials, grinding wheel work abrasive wear faster, need a faster update.Grinding wheel

              In order to ensure the precision and roughness of grinding, a slightly hard grinding wheel should be selected. The thermal conductivity of workpiece materials is poor, easy to produce burns and cracks (such as grinding carbide, etc.), the selection of grinding wheel should be softer.Grinding wheel