Method of manufacturing honeycomb extrusion die and die manufactured according to this method

Abstract

A method of manufacturing a honeycomb extrusion die has the steps of: preparing a die base metal in which a plurality of intersecting slits are arranged in a front surface thereof and a plurality of raw material feeding holes communicated with the slits are arranged in a back surface thereof; forming a plating layer on the die base metal by means of electrolytic plating; (1) and forming a TiCN layer on the plating layer by means of CVD (chemical vapor deposition); or (2) forming a TiN layer on the plating layer by means of CVD (chemical vapor deposition); and forming a TiCN layer on the TiN layer by means of CVD. In this manner, the honeycomb extrusion die is obtained.

Dependencies are inferred from the claim text.