| 摘要 |
Provided is an extrusion die for molding an alloy pipe member in which partitions are formed by forming an extrusion passage and an extrusion port inside a mandrel such that partitions are formed in a pipe member to be molded, the mandrel installed in a space part of the extrusion die to form an extrusion passage of billet in the molten state between die body and the inner surface of the mandrel. In a pipe member extrusion molding die comprising a die body(1) and a mandrel(7), an extrusion die(100) for molding pipe member is characterized in that the die body is consisted of a rear die body(3) that faces a container for extruder, and a front die body(5) inserted into the rear die body and installed in front of the container such that a space part is formed between the front die body and the rear die body, the mandrel forms an extrusion passage(9) for pipe material and an extrusion port(11) for pipe material respectively between the inner surfaces of the rear and front die bodies in the space part, a rear part of the mandrel is integrally fixed to a billet inlet(13) side of the rear die body through a plurality of connection members(15), an individual extrusion passage(17) for partition that is opened toward a rear part of the mandrel is formed in the mandrel, and an extrusion port(19) for partition connected to the extrusion passage for partition is formed on a front part of the mandrel.
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