PRESS-MOLDED ARTICLE AND METHOD FOR DESIGNING SAME - NIPPON STEEL & SUMITOMO METAL CORP

Title:

PRESS-MOLDED ARTICLE AND METHOD FOR DESIGNING SAME

Document Type and Number:

WIPO Patent Application WO/2016/190083

Kind Code:

A1

Abstract:

This press-molded article is molded by press working from a tailored blank obtained by butt-welding a plurality of metal sheets. The press-molded article includes a flange section (10b), and an arc-shaped region (14) which is a portion of the region of the flange section (10b) that is formed by stretch flange deformation and has an open inner peripheral edge (14b). A welding line (L) of the tailored blank intersects with the inner peripheral edge (14b) and an outer peripheral edge (14a) of the arc-shaped region (14). An angle θ between the welding line (L) and the maximum principal strain direction of the stretch flange deformation is 17-84°.

Inventors:

SAITO MASAHIRO (JP)
NAKAZAWA YOSHIAKI (JP)
OTSUKA KENICHIRO (JP)
ITO YASUHIRO (JP)
YASUYAMA MASANORI (JP)
TOKUNAGA MASATOSHI (JP)

Application Number:

PCT/JP2016/063867

Publication Date:

December 01, 2016

Filing Date:

May 10, 2016

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

B21D22/20; B21D22/26

Domestic Patent References:

WO2010128540A1

2010-11-11

Foreign References:

JP2001001062A	2001-01-09
JP2015016486A	2015-01-29
JP2011152589A	2011-08-11

Other References: