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1. (WO2017217538) DRAWN BODY FOR AUTOMOBILE STRUCTURAL MEMBER, METHOD FOR MANUFACTURING DRAWN BODY FOR AUTOMOBILE STRUCTURAL MEMBER, AND APPARATUS FOR MANUFACTURING DRAWN BODY FOR AUTOMOBILE STRUCTURAL MEMBER

Pub. No.:    WO/2017/217538    International Application No.:    PCT/JP2017/022346
Publication Date: Fri Dec 22 00:59:59 CET 2017 International Filing Date: Sat Jun 17 01:59:59 CEST 2017
IPC: B62D 25/04
B21D 22/26
B21D 24/00
B60R 19/04
B62D 25/20
Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION
新日鐵住金株式会社
Inventors: OTSUKA Kenichiro
大塚 研一郎
MIYAGI Takashi
宮城 隆司
Title: DRAWN BODY FOR AUTOMOBILE STRUCTURAL MEMBER, METHOD FOR MANUFACTURING DRAWN BODY FOR AUTOMOBILE STRUCTURAL MEMBER, AND APPARATUS FOR MANUFACTURING DRAWN BODY FOR AUTOMOBILE STRUCTURAL MEMBER
Abstract:
This drawn body for an automobile structural member is configured so that the tensile strength thereof is 980 MPa or more, two first protruding ridge lines, a second protruding ridge line, and a recessed ridge line thereof each have a radius of curvature of 30 mm or less, the corner radius of each corner wall is 30 mm or less, and the forming depth, which is the distance between a top panel and an outward flange, is 40 mm or more.