Invention Grant
- Patent Title: Laser welding method and laser welding device
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Application No.: US15107347Application Date: 2014-12-25
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Publication No.: US10155285B2Publication Date: 2018-12-18
- Inventor: Junji Fujiwara , Yasushi Mukai , Atsuhiro Kawamoto , Tatsuyuki Nakagawa , Noriyuki Matsuoka
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2014-002891 20140110
- International Application: PCT/JP2014/006453 WO 20141225
- International Announcement: WO2015/104781 WO 20150716
- Main IPC: B23K26/322
- IPC: B23K26/322 ; B23K26/00 ; B23K26/244 ; B25J11/00 ; B23K26/22 ; B23K26/082 ; B23K101/00 ; B23K101/34 ; B23K103/04 ; B23K103/08

Abstract:
A laser welding method of the present disclosure includes a first step, a second step, and a third step. In the first step, a first workpiece and a second workpiece are stacked on each other. Each of the first workpiece and the second workpiece has a surface coated with a first material and is made of a second material, which is different from the first material. In the second step, a first region in which the first workpiece and the second workpiece are stacked on each other is irradiated with a laser beam so that the laser beam penetrates both the first workpiece and the second workpiece. In the third step, a second region including the first region is irradiated with a laser beam in a spiral fashion.
Public/Granted literature
- US20170001261A1 LASER WELDING METHOD AND LASER WELDING DEVICE Public/Granted day:2017-01-05
Information query
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