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:
Oct. 04, 2016
Filed:
Jun. 23, 2011
Applicants:
Reiichi Suzuki, Fujisawa, JP;
Masao Kinefuchi, Kobe, JP;
Ryu Kasai, Fujisawa, JP;
Inventors:
Assignee:
Kobe Steel, Ltd., Kobe-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25G 3/34 (2006.01); F16B 11/00 (2006.01); F16B 12/04 (2006.01); F16L 13/00 (2006.01); B23K 9/025 (2006.01); B23K 9/09 (2006.01); B23K 9/173 (2006.01); B23K 9/23 (2006.01); B23K 31/12 (2006.01); B23K 35/02 (2006.01); B23K 35/30 (2006.01); B23K 35/38 (2006.01); C21D 9/50 (2006.01);
U.S. Cl.
CPC ...
B23K 9/025 (2013.01); B23K 9/09 (2013.01); B23K 9/173 (2013.01); B23K 9/23 (2013.01); B23K 31/12 (2013.01); B23K 35/0266 (2013.01); B23K 35/3053 (2013.01); B23K 35/383 (2013.01); C21D 9/50 (2013.01); B23K 2203/04 (2013.01); Y10T 403/478 (2015.01);
Abstract
A fillet weld joint of steel formed by arc welding, wherein a martensitic transformation starting temperature (Ms point) of a weld metal is 400° C. or above and 550° C. or below, a value obtained by dividing a toe radius ρ of a toe part of welding by a sheet thickness t of a base metal (ρ/t) is 0.25 or above, an expression Ms(° C.)≦375×[ρ/t]+320 is satisfied, and a crack defect does not exist in the fillet weld joint.