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How to test the hardness of a free sample cutting disc hardness tester?

What are the methods for testing the hardness of a free sample cutting disc hardness tester?

Ordinary abrasive tools, Rockwell hardness test methods for hardness testing. This method uses steel balls to press into the surface of the grinding wheel. Since the abrasive grains, binders and pores in the grinding wheel are randomly distributed, the Rockwell hardness measurement value also has a large randomness, in order to ensure the accuracy of the measured value, the sampling amount More. Moreover, the hardness of the steel ball is lower than that of the abrasive grain, and the steel ball needs to be replaced after a certain period of time.

The hardness of the grinding wheel is indispensable for the manufacturer of the grinding wheel. So what good method can not damage the grinding wheel during the testing process? Generally speaking, there are four methods for detecting the hardness of the grinding wheel, namely the hand cone method, the sand blasting method, the Rockwell hardness method and the acoustic method. Today, the Shunfei grinding wheel introduces a new detection method – the sound method.

The sound method is a relatively new method. This method does not damage the grinding wheel and is independent of the abrasive toughness. The former Soviet Union paid more attention to the physical properties of the grinding wheel for sound detection, and established the standard for determining the hardness of the thin grinding wheel by the acoustic method. Japan also has the standard established by the acoustic method.

 

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