Patent ID: 8404176
Filing Date: 2013-03-26
Classification: C21D

Abstract:
1. A hybrid manufacturing apparatus for a torsion beam, comprising: a room-temperature molding apparatus making a circular hollow raw material to a pre-forming material which is 50 to 80% of an actual torsion beam shape through cold expansion molding at room temperature; a heating apparatus heating the pre-forming material up to A3 transformation point temperature by using a heating furnace and making the heated pre-forming material to a semi-finished product material acquired by austeniting an internal structure of the heated pre-forming material; a remolding apparatus in which the semi-finished material is set by a molding mold, the semi-finished product material is molded to a process finished product of a 100% actual torsion beam shape by a pair of side punch molds, and the temperature of the processed finished product is decreased by non-contact cooling with cooling water which flows in cooling water circulation lines arranged to surround an entire shape of the semi-finished product material; a heat treatment apparatus applying heat treatment to the processed finished product; and a post processing apparatus manufacturing a final finished product by post-processing the heat-treated processed finished product.