Cermet cutting tools and carbide cutting tool wear curve yg8 stainless 1cr18ni9ti contrast when shown in Figure 3. Figure seen from cermet cutting tools than yg8 carbide tools, their life is more than three times yg8 tool, mainly due to the cermet material excellent mechanical properties and thermal conductivity, and anti-adhesion properties Good and other excellent physical properties [6]. Surface quality of metal ceramic cutting tools is also superior yg8 tools. So visible, metal ceramic tool is more suitable for stainless steel semi-finishing and finishing.

When the processing of stainless steel material, in order to ensure the smooth progress of cutting and higher tool life and surface quality, should pay attention to the following points: ① should choose the larger rake angle and smaller main angle to reduce cutting force, so Cutting more light; ② should carefully grinding the front and rear of the tool, in order to obtain a high surface finish, to avoid bonding with the workpiece during cutting; ③ use the higher cutting speed or low cutting speed; ④ stainless steel chips toughness is strong, it should take appropriate and effective measures to break crumbs, crumbs and chip volume; ⑤ poor thermal conductivity of stainless steel, large linear expansion coefficient, at the local high temperature cutting zone easy to produce thermal deformation, finishing easy Effect of dimensional accuracy, and therefore should be used better thermal conductivity tool; ⑥ should try to improve the machine - the stiffness of the tool technology system.