Typically, the use hsc machining is possible for more than 56hrc hardness of workpiece machining. In this regard, with the proviso that the combined effect of cutting speed and temperature. For hsc, the melting point of the workpiece material must be tested at a suitable cutting speed. Generally higher than the melting point of the coating of maximum allowable temperature of the workpiece material, it must be careful. In this best aphorism is "Keep the tool cool down."

This means that on the one hand and the work of the contact area must be as small as possible, on the other hand must be done at a certain speed machining, the heat was too late to make the cutting edge more than the allowable temperature coating.

Speed is especially important to correctly detect. Therefore, we must take practical and effective tool diameter for the foundation. In the infeed amount ap = 0.1mm of circumstances, 6mm diameter ball-cutter, the actual effective diameter of 1.54mm. In order to achieve the cutting speed 200m / min, the speed necessary to achieve 41000r / min.