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.
