Low surface roughness of the workpiece, the optional small depth of cut, but not too small, to be appropriate. Feed rate can usually choose between 0.05 ~ 0.25mm / r, depending on the specific values of surface roughness value and productivity requirements. When the surface roughness ra = 0.3 ~ when 0.66μm, using super-hard cutting tools for hard turning with grinding is much more than economic.

In addition to selecting a reasonable tool, the use of super-hard cutting tools for hard turning no special requirements on the lathe or turning center lathe or turning center if sufficient rigidity and to get the required accuracy and surface roughness when machining soft parts, namely Suitable for hard cutting. In order to ensure smooth and continuous, commonly used method is to use rigid clamping device and tool rake angle medium turning operations. If the workpiece in the cutting force its positioning, supporting and rotation may remain fairly steady state, existing equipment can superhard tools using hard turning.

Superhard tools used in hard turning superhard tools using hard turning, the technology after ten years of development and application, access to a huge economic and social benefits. The following roll processing industry, for example, described in the production of super-hard tool to promote the application.