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:
Jul. 09, 2019
Filed:
Jan. 29, 2014
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Keisuke Kamitani, Tokyo, JP;
Shuho Tsubota, Tokyo, JP;
Takafumi Aoyama, Tokyo, JP;
Yasuyuki Fujiya, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A laser welding method of the present invention is a laser welding method for irradiating with a laser beam a groove portionformed along a circumferential direction by butting axial end portions of cylindrical bodiestogether to weld the groove portion, the method comprising: a welding process Sof irradiating the groove portionwith the laser beam over the entire circumference to weld the groove portion; and a strain correction process Sof irradiating the groove portionwith the laser beam over the entire circumference, the laser beam having a heat input amount smaller than a heat input amount per unit area of the laser beam emitted in the welding process S