Usually, the HSC processing is likely to cut the workpiece hardness more than 56hrc. In this regard,the restriction condition is the comprehensive effect of cutting speed and temperature. For HSC,the test workpiece materials must be in the appropriate cutting speed under the melting point.Usually the workpiece material melting point is higher than the maximum allowable temperature of the coating, so it must be circumspect. The best one is "to keep the tool cooling". This means that the contact area and the workpiece must be as small as possible, on the other hand must befinished at the cutting speed, the cutting edge not fever to more than allowed by the coatingtemperature. To correctly detect a rotational speed is especially important. Therefore, must takepractical and effective diameter of cutter. In the horizontal feed of ap=0.1mm, diameter of ball end milling of 6mm, the effective diameter of 1.54mm. In order to make the cutting speed reaches 200m/min, the speed necessary to achieve 41000r/min.

Chip processing production and with the chip with the heat must be removed as soon as possible.The best way is through the spindle directly to the cutting edge blowing with compressed air.According to the different workpiece materials, compressed air can be with small amount of lubricating oil. Can produce a better surface quality by using a small amount of lubricating oil,because the chip will not adhere to the cutting edge.

For the hard cutting, absolutely can not use emulsion. Just a drop of water can cause temperature changes, and can make the tools into a single component. Due to the tiny crack hard alloy iscaused by mutations in the temperature, will cause the cutting edge cracking. In the HSC case,according to the tool diameter and different speed, these fragments may have the equivalent of abullet fired energy weapon.