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, 2013
Filed:
Jun. 29, 2010
Takeshi Tsukamoto, Mito, JP;
Hirotsugu Kawanaka, Hitachi, JP;
Yoshihisa Maeda, Tsuchiura, JP;
Shinji Imaoka, Omitama, JP;
Tetsuya Kuwano, Tsuchiura, JP;
Taiji Hashimoto, Tsuchiura, JP;
Takeshi Tsukamoto, Mito, JP;
Hirotsugu Kawanaka, Hitachi, JP;
Yoshihisa Maeda, Tsuchiura, JP;
Shinji Imaoka, Omitama, JP;
Tetsuya Kuwano, Tsuchiura, JP;
Taiji Hashimoto, Tsuchiura, JP;
Hitachi Plant Technologies, Ltd., Tokyo, JP;
Abstract
A welding apparatus and a welding method are employed for laser narrow groove welding which performs welding scanning a laser beam in the welding direction while feeding a solid filler metal into a narrow groove. The welding apparatus includes a laser beam irradiation head having a mechanism periodically oscillating an irradiation point of the laser beam with a predetermined amplitude in the bottom of the groove, and a filler metal control device having a solid filler metal feeder feeding the solid filler metal to the molten pool formed in the bottom of the groove by the laser beam and adjusting the feeding position independent of a motion of the laser beam irradiation head so that the tip position of the solid filler metal detected is constantly positioned in the center of the groove.