How to select the right grinding wheel in cemented carbide industry

1、Pre-grinding treatment of cemented carbide

The surface hardness of cemented carbide is high, the density is big, easy to be affected by the heat, therefore needs to carry on certain treatment before grinding. First, the cemented carbide product is placed in the cooling fluid, by mechanical or other means to increase the cooling effect when grinding. Secondly, the cemented carbide surface is cleaned to remove chamfer, Burr and surface oxide, so as to better contact with the grinding wheel.

2、Selection of grinding wheel material and shape

The material and shape of the grinding wheel have great influence on the grinding effect. The grinding of cemented carbide is suitable to use diamond wheel or alumina wheel. The diamond wheel has higher hardness and better grinding effect on cemented carbide, and the alumina wheel can consume more alumina and has higher grinding efficiency. In the grinding of cemented carbide products, the commonly used grinding wheel shapes are flat wheel, bowl wheel, cylindrical wheel and cutting wheel, etc. . The wheel shape should be selected according to the profile shape of the workpiece and the grinding position.

3、Selection of grinding wheel size and hardness

The particle size and hardness of the grinding wheel also have a great impact on the grinding effect. The finer the grinding wheel is, the smoother the grinding surface is, but the grinding efficiency is lower. Therefore, the grinding wheel size should be selected according to the grinding requirements. In addition, the hardness of grinding wheel according to the material characteristics of cemented carbide products. If the wheel hardness is too large, grinding speed slow, easy to generate heat, resulting in a decline in grinding quality; if the wheel hardness is too small, the wheel easy to wear, deformation, grinding effect is not good. Therefore, according to the characteristics of cemented carbide products selection of appropriate wheel hardness is very important.   

4、Summary

Grinding hard alloy needs proper grinding wheel and skill. The material, shape, grain size and hardness of grinding wheel all affect the grinding effect. In the process of operation, attention should be paid to the position of grinding wheel and cemented carbide products, grinding speed and temperature and other parameters. Only master the right skills and select the right wheel, can get better grinding results.