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:
May. 31, 2016
Filed:
Dec. 03, 2010
Applicants:
Tadashi Ishikawa, Tokyo, JP;
Ryuichi Honma, Tokyo, JP;
Kazutoshi Ichikawa, Tokyo, JP;
Inventors:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 9/00 (2006.01); B23K 35/30 (2006.01); B23K 15/00 (2006.01); B23K 15/06 (2006.01); B23K 26/20 (2014.01); B23K 26/26 (2014.01); F03D 1/00 (2006.01); C22C 38/08 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01);
U.S. Cl.
CPC ...
B23K 35/30 (2013.01); B23K 15/006 (2013.01); B23K 15/0073 (2013.01); B23K 15/06 (2013.01); B23K 26/203 (2013.01); B23K 26/211 (2015.10); B23K 26/26 (2013.01); C22C 38/08 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); F03D 1/001 (2013.01); B23K 2201/06 (2013.01); B23K 2201/18 (2013.01); B23K 2203/04 (2013.01); F05B 2230/232 (2013.01); Y02E 10/728 (2013.01); Y02P 70/523 (2015.11);
Abstract
A welding joint comprises a pair of steel materials, and a welding metal that is formed with a high-energy density beam at a butt welding portion between the pair of steel materials, wherein a transformation starting temperature Ms that is calculated by a following formula: Ms(° C.)=371−353C−22Si−24.3Mn−7.7Cu−17.3Ni−17.7Cr−25.8Mo, using a composition of mass % of the welding metal is 250° C. or less.