Title:
WELDING METHOD AND WELDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/245053
Kind Code:
A1
Abstract:
In this welding method, a workpiece in which a plurality of metal foils overlap each other is arranged in a region irradiated with laser light constituted by a plurality of beams, and the plurality of beams of the laser light are emitted onto the surface of the workpiece by distributing the positions to be irradiated with the beams in a predetermined region on the surface such that the centers of the beams do not overlap, whereby the irradiated portion of the workpiece is melted and welded. Each of the plurality of beams is set to have a power density insufficient to form a hole in the metal foils, while the power density of the plurality of beams are set so that a molten pool passing through the workpiece is formed by the plurality of beams. Moreover, the irradiation positions of the beams are distributed.
Inventors:
NISHII RYOSUKE (JP)
KASHIWAGI KOUSUKE (JP)
KAYAHARA TAKASHI (JP)
YASUOKA TOMOMICHI (JP)
SHIGEMATSU TAKASHI (JP)
KASHIWAGI KOUSUKE (JP)
KAYAHARA TAKASHI (JP)
YASUOKA TOMOMICHI (JP)
SHIGEMATSU TAKASHI (JP)
Application Number:
PCT/JP2019/025007
Publication Date:
December 26, 2019
Filing Date:
June 24, 2019
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
B23K26/21; B23K26/067
Foreign References:
| JP2014136242A | 2014-07-28 | |||
| JP2018051607A | 2018-04-05 | |||
| JP2015205327A | 2015-11-19 | |||
| JP2014136242A | 2014-07-28 |
Other References:
See also references of EP 3812078A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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