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:
Apr. 21, 2025
Filed:
Aug. 31, 2021
Applicant:
Ihi Corporation, Tokyo, JP;
Inventors:
Assignee:
IHI CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 26/342 (2013.12); E01D 22/00 (2005.12); E04G 23/02 (2005.12);
U.S. Cl.
CPC ...
B23K 26/342 (2015.09); E01D 22/00 (2012.12); E04G 23/0203 (2012.12);
Abstract
A crack repair method includes a build-up welding step of performing build-up welding on a portion of an existing steel structure where a crack is generated while feeding a filler wire, and a laser beam piercing welding step of performing piercing welding using a laser beam on a filler material build-up portion caused by the build-up welding in the build-up welding step and the crack. The crack can be melted and repaired without lowering a toughness value regardless of an operation condition.