炭窒化チタン系セラミックス工具の切削性能

概要

論文の詳細を見る
Generally, cermets are mainly used for finish machining tools of the carbon steel. However these tools are used at speed of 200 to 250m/min, and they have short lives. Higher cutting speeds and longer lives are required for higher efficiency. It is expected that this domain can be achieved by using new ceramic tool. In this report, the wear and chipping resistance of developed Ti(C_<0.5>, N_<0.5>)-TiB_2 and Ti(C_<0.5>, N_<0.5>)-Cr_3C_2 based ceramic tools were studied when turning a carbon steel, bearing steel and stainless steel. In dry cutting, the tool lives of these Ti(C_<0.5>, N_<0.5>) based ceramic tools are longer than those of commercial tools such as cermet and Al_2O_3-TiC ceramics when turning a carbon steel at high speed finish cutting conditions, especially Ti(C_<0.5>, N_<0.5>) -30%TiB_2 ceramic tools and Ti(C_<0.5>, N_<0.5>)-20%Cr_3C_2-1%B_4C ceramics tools exhibit excellent cutting performance. Also, it was investigated that failure of ceramic tools occur when they go away from workpiece after cutting as exit failure in interrupted cutting.
公益社団法人精密工学会の論文
1991-06-05