METHOD FOR PROLONGING SERVICE LIFE OF CUTTING TOOL BY ION IMPLANTATION

摘要

PURPOSE:To prolong the service life of a cutting tool by forming a hard film on the surface of the groove in the tool by ion implantation so as to prevent breaking as well as to stabilize the cutting performance of the cutting edge. CONSTITUTION:A hard film is formed on the surface of the groove 3 in a cutting tool 1 by implanting ions such as N<+> ions in a direction perpendicular to the tool 1. shavings are discharged through the groove 3 during cutting. The formed hard film lowers the coefft. of friction of the surface of the groove 3 and enables the smooth discharge of shavings produced by the cutting edge. Thus, stable cutting performance is obtd. and breaking due to undischarged shavings is prevented.