Title:
LASER WELDING METHOD AND METHOD FOR MANUFACTURING ELECTRIC ROTATING MACHINE USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/220666
Kind Code:
A1
Abstract:
A laser welding method wherein a material (10) that contains copper as a principal component is heated by irradiation with a first laser light (L1), and welding is performed in the part of the material (10) that is irradiated by the first laser light (L1) by irradiation with a second laser light (L2), for which the rate of energy absorption of the copper contained in the material (10) increases as the temperature of the material (10) increases.
Inventors:
ITOU MASATOSHI (JP)
NISHIKAWA TAKASHI (JP)
TSUKAMOTO MASAHIRO (JP)
SATO YUJI (JP)
SUGA TETSUO (JP)
NISHIKAWA TAKASHI (JP)
TSUKAMOTO MASAHIRO (JP)
SATO YUJI (JP)
SUGA TETSUO (JP)
Application Number:
PCT/JP2021/011791
Publication Date:
November 04, 2021
Filing Date:
March 22, 2021
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
UNIV OSAKA (JP)
UNIV OSAKA (JP)
International Classes:
B23K26/21; B23K26/32; H02K15/04
Foreign References:
| JPH05104276A | 1993-04-27 | |||
| JP2005313195A | 2005-11-10 | |||
| JP2020039191A | 2020-03-12 | |||
| JP2019118159A | 2019-07-18 | |||
| JP2017098161A | 2017-06-01 | |||
| JP2009269036A | 2009-11-19 |
Other References:
See also references of EP 4129558A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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