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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 9555496 B1

PDFFull Text
Date of Patent:
Jan. 31, 2017

Filed:

Mar. 27, 2013

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Applicant:

Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;

Inventors:

Kenta Yamada, Tokyo, JP;

Masahiko Hamada, Tokyo, JP;

Daisuke Motoya, Tokyo, JP;

Shinjiro Nakatsuka, Tokyo, JP;

Hisashi Amaya, Tokyo, JP;

Hideki Takabe, Tokyo, JP;

Assignee:

NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;

Attorney:

Clark & Brody

Primary Examiner:

Geoffrey S Evans

Int. Cl.
CPC ...
B23K 35/30 (2006.01); B23K 35/38 (2006.01); B23K 9/23 (2006.01); B23K 9/173 (2006.01); C22C 38/18 (2006.01); C22C 38/58 (2006.01); B23K 35/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/54 (2006.01); B23K 9/025 (2006.01); B23K 9/028 (2006.01); C22C 38/46 (2006.01); F16B 13/00 (2006.01); C22C 38/40 (2006.01);
U.S. Cl.
CPC ...
B23K 9/23 (2013.01); B23K 9/025 (2013.01); B23K 9/028 (2013.01); B23K 9/173 (2013.01); B23K 35/0288 (2013.01); B23K 35/302 (2013.01); B23K 35/308 (2013.01); B23K 35/3053 (2013.01); B23K 35/3086 (2013.01); B23K 35/38 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); F16B 13/00 (2013.01); B23K 35/383 (2013.01); B23K 2201/06 (2013.01); B23K 2201/10 (2013.01); B23K 2201/18 (2013.01); B23K 2203/04 (2013.01); B23K 2203/05 (2015.10); C22C 38/40 (2013.01); Y10T 403/479 (2015.01);
Abstract

A process for producing a welded joint, which includes a weld metal having high strength and high toughness, and containing fewer blowholes, includes the steps of: preparing a base material containing, by mass %, not less than 10.5% of Cr; and subjecting the base material to GMA welding using a shielding gas containing 1 to 2 volume % or 35 to 50 volume % of COgas, and the balance being inert gas, thereby forming a weld metal includes, by mass %, C: not more than 0.080%, Si: 0.20 to 1.00%, Mn: not more than 8.00%, P: not more than 0.040%, S: not more than 0.0100%, Cu: not more than 2.0%, Cr: 20.0 to 30.0%, Ni: 7.00 to 12.00%, N: 0.100 to 0.350%, O: 0.02 to 0.11%, sol. Al: not more than 0.040%, at least one of Mo: 1.00 to 4.00% and W: 1.00 to 4.00%, and the balance being Fe and impurities.

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