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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12528110 B1

PDFFull Text
Date of Patent:
Jan. 20, 2026

Filed:

Mar. 16, 2021

Steel component and production method for the same

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventor:

Yasuhiro Ito, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
B21D 22/02 (2006.01); B21D 5/08 (2006.01); B21D 21/00 (2006.01); B21D 35/00 (2006.01); B21D 39/03 (2006.01); B23K 31/02 (2006.01); B32B 3/04 (2006.01); B32B 3/08 (2006.01); B32B 3/28 (2006.01); B32B 7/08 (2019.01); B32B 15/01 (2006.01); C21D 9/46 (2006.01); C23C 2/06 (2006.01); C23C 2/20 (2006.01); B23K 101/00 (2006.01);
U.S. Cl.
CPC ...
B21D 22/022 (2013.01); B21D 39/031 (2013.01); B32B 3/04 (2013.01); B32B 3/085 (2013.01); B32B 3/28 (2013.01); B32B 7/08 (2013.01); B32B 15/011 (2013.01); B32B 15/013 (2013.01); C21D 9/46 (2013.01); C23C 2/06 (2013.01); C23C 2/20 (2013.01); B23K 2101/006 (2018.08); B32B 2250/02 (2013.01); B32B 2307/732 (2013.01); B32B 2605/08 (2013.01); C21D 2211/008 (2013.01);
Abstract

A production method for a steel component includes preparing a patchwork material including steel sheets that are laid one on another, at least one of overlap surfaces of the steel sheets including a zinc-based plating layer, heating the patchwork material, and performing hot stamping on the patchwork material heated to form the steel component in which a joint part between the steel sheets is disposed in a bent area. When tdenotes a sheet thickness of a steel sheet located on an outer side in the bent area, and tdenotes a sheet thickness of a steel sheet located on an inner side, t/t≥1.1 is satisfied. The joint part is disposed in a ridge portion or at a position in a vicinity of the ridge portion, and the position satisfies d/t<8.2, where d denotes a distance from the ridge portion to the joint part.

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