Extruding die for metallic materials.

摘要

An extruding die (1) for metallic materials comprising a male die (2) and a female die (3) is provided with a billet-receiving face (2c) of the male die (2) shaped into convex form. It is possible to reduce breakage frequency of the extruding die (1) by reducing the tensile stress applied on the male die (2) at the time of the extrusion.