The general principle of selecting the hardness of electroplated diamond grinding wheel is: when processing soft ls, in order to prevent the abrasive from falling off prematurely, the hard grinding wheel is selected. Strong wear resistance, long life. The grinding ratio of CBN grinding wheel can reach 3500-5500, which is one hundred times higher than ordinary corundum grinding wheel and 3-5 times higher than diamond grinding wheel.

When processing hard ls, in order to make the dull abrasive particles fall off in time, thus revealing the self-sharpening with sharp edges, soft grinding wheels are selected. The latter is because when grinding soft materials, the working abrasive wear of the grinding wheel is very slow, and it is not necessary to break away too early; The latter is because when grinding hard materials, the working particles of the grinding wheel wear faster and need to be updated faster.

High working efficiency, good comprehensive economic benefits. Sharp grinding, small grinding force, CBN grinding wheel dressing cycle is long, less dressing amount, long replacement time; Long service cycle, high grinding ratio, can obtain better economy, good shape retention in use, no need to often replace the grinding wheel and dressing wheel, saving time, improve working conditions, conducive to processing operation.