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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 10975899 B1

PDFFull Text
Date of Patent:
Apr. 13, 2021

Filed:

Sep. 15, 2017

Welded member and method for manufacturing same

Applicant:

Nippon Steel Nisshin Co., Ltd., Tokyo, JP;

Inventors:

Kazuaki Hosomi, Tokyo, JP;

Tomokazu Nobutoki, Tokyo, JP;

Takefumi Nakako, Tokyo, JP;

Assignee:

NIPPON STEEL NISSHIN CO., LTD., Tokyo, JP;

Attorneys:

Mintz Levin Cohn Ferris Glovsky

David G. Conlin

Steven M. Jensen

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 2/06 (2006.01); C23C 2/40 (2006.01); C22C 18/04 (2006.01); B23K 9/025 (2006.01); F16B 5/08 (2006.01); B23K 9/09 (2006.01); B23K 9/02 (2006.01); B23K 9/23 (2006.01); B32B 15/04 (2006.01); B23K 9/16 (2006.01); C23C 30/00 (2006.01); B32B 15/01 (2006.01); B23K 35/38 (2006.01); C22C 18/00 (2006.01); B32B 15/18 (2006.01); B23K 101/00 (2006.01); B23K 101/34 (2006.01);
U.S. Cl.
CPC ...
F16B 5/08 (2013.01); B23K 9/02 (2013.01); B23K 9/0256 (2013.01); B23K 9/09 (2013.01); B23K 9/16 (2013.01); B23K 9/23 (2013.01); B23K 35/38 (2013.01); B32B 15/011 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/18 (2013.01); C22C 18/00 (2013.01); C22C 18/04 (2013.01); C23C 2/06 (2013.01); C23C 2/40 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); B23K 2101/006 (2018.08); B23K 2101/34 (2018.08); Y10T 428/12799 (2015.01); Y10T 428/12958 (2015.01); Y10T 428/12965 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/12993 (2015.01); Y10T 428/26 (2015.01); Y10T 428/27 (2015.01);
Abstract

A welded member includes a hot dip Zn-based alloy coated steel sheet as a base material and has excellent corrosion resistance and weld bead shear strength. In the welded member in which a lower sheet and an upper sheet, which are hot dip Zn-based alloy coated steel sheets, are stacked and arc-welded together, a weld bead is formed so that a cross-sectional width W satisfies the following formula 2T≤W≤6T, and a blowhole occupancy Br represented by the following formula becomes not more than 50%: Br=(Σdi/L)×100, where T represents a thickness of the hot dip Zn-based alloy coated steel sheet, di represents a length of an i-th blowhole observed in X-ray radiography, and L represents a length of the weld bead.

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