METHOD FOR CUTTING COLD WORK TOOL STEEL, AND METHOD FOR PRODUCING COLD-WORKING DIE MATERIAL

摘要

The present invention provides a method for cutting a cold work tool steel containing 0.6 to 1.2% by mass of C and having hardness of 60 HRC or more, said method comprising cutting the cold work tool steel using a coated cutting tool that is coated with a coating film comprising a nitride of AlTi, wherein a metal part (including a semi-metal part) of the coating film contains Al at an atom ratio of more than 50%.