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Hardness and self-sharpness of CBN grinding wheel

The definition of the hardness of CBN grinding wheel refers to the strength of the binding agent rather than the strength of the abrasive grain, because the hardness of the CBN grinding wheel is uniform, so it is the binding agent that determines the hardness of the grinding wheel. Under the same force, it is easy to break the grinding wheel of abrasive to be low hardness, and vice versa. Today we are going to share with you the relationship between the hardness of the CBN grinding wheel and the self-sharpening of the grinding wheel.





Since the sharpness is an important reason is the CBN grinding wheel in over a period of time after use, will cause the grinding grain of passivation, continue to use in this situation would make grinding force increases, so will make the surface of the grinding wheel grinding grain fall off automatically, the inside of the new particle will leak out, abrasive sharp change back like that, so as to ensure the cutting ability of CBN grinding wheel. We call this process the self-sharpening of the grinding wheel.


Generally speaking, the softer the CBN grinding wheel, the better, because the combination is relatively low, and can better complete the self-sharpening process. It is important to note that in the process of the choice of grinding wheel according to your workpiece materials, grinding, machining time and the amount of cooling system and so on comprehensive conditions to select the CBN grinding wheel, so as not to affect the production efficiency and product quality.
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