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:
Nov. 29, 2022
Filed:
May. 30, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Toru Hioki, Nisshin, JP;
Shuhei Ogura, Nagakute, JP;
Atsushi Kawakita, Miyoshi, JP;
Koki Nakada, Toyota, JP;
Takashi Goto, Toyota, JP;
Ryosuke Kawai, Okazaki, JP;
TOYOTA JTDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
In a laser welding method, generation of relatively large blow holes in a welding part is prevented while decrease in productivity is reduced. The laser welding method for lap welding, using a laser beam LB, of a plurality of metal plates and including an aluminum alloy cast plate includes: a melting path of scanning and irradiating circularly a superimposed part of the aluminum alloy plate and the aluminum alloy cast plate with a first laser beam LBto form a molten pool of the molten aluminum alloy plate and the molten aluminum alloy cast plate; and a stirring path of scanning and irradiating circularly the molten pool with a second laser beam LBhaving a scanning speed Vfaster than a scanning speed Vof the first laser beam LBto stir the molten pool.