Method for processing metal molding member having fine configuration, method for manufacturing metal molding member, extrusion die, method for manufacturing extruded member, and extruded member

Abstract

A molten residual layer formed on a surface 26 of an electric-discharge machined portion 12 of a metal molding member 1 is eliminated by using a tool 70 made by a wire discharge grinding method. According to the wire discharge grinding method, a minute tool which is high in processing accuracy and high in hardness can be obtained. Since the molten residual layer formed on a surface 26 of the portion 12 due to the electric-discharge machining is eliminated by using the tool, the molten residual layer can be eliminated uniformly with high accuracy.

1 . A method for processing a metal molding member, comprising:
 eliminating a molten residual layer formed on a surface of an electric-discharge machined portion of the metal molding member by using a tool of sintered diamond made by a wire discharge grinding method without detaching the tool from a tool setter used for manufacturing the tool.   
     
     
         2 . The method as recited in  claim 1 , wherein the metal molding member is any one of sintered hard alloy, conductive ceramics and non-conductive ceramics. 
     
     
         3 . The method in  claim 1 , wherein the electric-discharge machined portion has a minute configuration including a groove having a width of 0.03 mm or more but less than 0.3 mm. 
     
     
         4 . The method as recited in  claim 1 , wherein the molten residual layer is eliminated by grinding processing using the tool. 
     
     
         5 . The method as recited in  claim 1 , wherein the molten residual layer is eliminated by ultrasonic machining using the tool. 
     
     
         6 . The method as recited in  claim 1 , wherein the metal molding member is an extrusion die. 
     
     
         7 . The method as recited in  claim 1 , wherein the tool of sintered diamond has a round cross-section.