Abstract
Super-high speed turning of medium carbon steel S45C was studied using tungsten carbide, titanium carbide and ceramic tools. Tool force, tool wear, tool life and surface finish were investigated at the cutting speed from 150 to 3000 m/min. It was found that a certain grade of ceramic tool has great possibility of being employed for super-high speed machining from the viewpoint of tool force and tool life. Super-high speed machining operation produced an excellent surface finish, increasing the productivity of finish operation. But the tool life at super-high speeds was short at the present stage. Application of cutting fluids in super-high speed machining improved surface finish a little, but decreased tool life.
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