SURFACE TREATING METHOD OF TOOL

摘要

PROBLEM TO BE SOLVED: To provide desired heat resistance and abrasion resistance even when an AlCrN based hard film is applied to a high speed steel. SOLUTION: The surface of a base material 2 is coated with Ti, Cr, Si, or Al based film to form an intermediate layer 3, and then the surface of the intermediate layer 3 is coated with the AlCrN based hard film to form a surface layer 4.