Die for extruding honeycomb structural body

A die for extruding a honeycomb structural body, comprising:

• a die base body having a front face and a rear face and a plurality of independent openings extending from said rear face toward said front face, said die base body comprising alloy steel;
• an alloy steel plate having a front face and a rear face and a plurality of openings extending between said front and rear faces, said plurality of openings communicating with said plurality of independent openings in said die base body, said rear face of said alloy steel plate being fixed to said front face of said die base body;
• a wear resistant alloy plate having a front face and a rear face and a plurality of forming slits extending from said front face toward said rear face, said forming slits communicating with said independent openings and having a sectional profile corresponding to a sectional profile of the honeycomb body which is to be extruded therethrough;
• and
• a flame-sprayed layer located between said rear face of said wear resistant alloy plate and said front face of said alloy steel plate for joining said alloy steel plate to said wear resistant alloy plate, said flame-sprayed layer comprising the same material as the wear resistant alloy plate.