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.:
Date of Patent:
Mar. 31, 2020
Filed:
Sep. 09, 2016
Applicant:
Nisshin Steel Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
NIPPON STEEL NISSHIN CO., LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 38/00 (2006.01); E04B 1/24 (2006.01); E04C 3/06 (2006.01); F16B 5/10 (2006.01); B23K 26/242 (2014.01); F16B 5/08 (2006.01); B23K 101/28 (2006.01); B23K 103/04 (2006.01); E04C 3/04 (2006.01);
U.S. Cl.
CPC ...
B23K 26/242 (2015.10); C22C 38/00 (2013.01); E04B 1/24 (2013.01); E04C 3/06 (2013.01); F16B 5/08 (2013.01); B23K 2101/28 (2018.08); B23K 2103/04 (2018.08); E04C 2003/0413 (2013.01); E04C 2003/0452 (2013.01);
Abstract
A laser-welded shape section steel includes a web member and a flange member each made of a steel plate, the steel plate having an equivalent carbon content Cof not less than 0.075 and not more than 0.15, the equivalent carbon content Cbeing represented by the following formula: C=C+(Si/50)+(Mn/25)+(P/2)+(Cr/25)+Ti, where a welded part, which is a joint part in which the web member and the flange member are joined, has a hardness of not less than 1.2 times and not more than 4 times as hard as that of the steel plate, and the welded part a protrusion length of not greater than 1 mm.