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:
Jun. 02, 2017
Applicant:
Nisshin Steel Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
Nippon Steel Nisshin Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K 9/025 (2006.01); B23K 9/167 (2006.01); C22C 38/44 (2006.01); C22C 38/40 (2006.01); C22C 38/00 (2006.01); C22C 38/48 (2006.01); B23K 9/09 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); B23K 9/095 (2006.01); B23K 9/23 (2006.01); B23K 103/04 (2006.01); B23K 101/06 (2006.01);
U.S. Cl.
CPC ...
B23K 9/025 (2013.01); B23K 9/09 (2013.01); B23K 9/095 (2013.01); B23K 9/167 (2013.01); B23K 9/23 (2013.01); C22C 38/001 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); B23K 2101/06 (2018.08); B23K 2103/04 (2018.08);
Abstract
The present invention provides a method for producing a TIG-welded stainless steel tube without adding Hto a shielding gas, while inhibiting generation of a weld defect. The method is a method for producing a TIG-welded stainless steel tube and includes the steps of bending a stainless steel strip in a width direction so as to butt both edges against each other and TIG-welding the both edges thus butted. A pulse waveform of a pulse frequency of 40 Hz to 300 Hz is used as a current waveform of a welding power source.