Title:
WELDING METHOD FOR FIRST CYLINDRICAL PART AND SECOND CYLINDRICAL PART, MANUFACTURING METHOD FOR WATER HEATER, MANUFACTURING METHOD FOR COMPRESSOR, AND WELDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/058035
Kind Code:
A1
Abstract:
This welding method for a first cylindrical part and a second cylindrical part comprises a step for forming a molten pool, and a step for rotating at least one among the first cylindrical part and the second cylindrical part. In the step for forming the molten pool, a first cylindrical end of the first cylindrical part of a first member is welded to a second cylindrical end of the second cylindrical part which is included in a second member and fitted to the first cylindrical part, the end face of the second cylindrical end being aligned with the first cylindrical end, and a molten pool straddling the first cylindrical end and the second cylindrical end is formed across the entire circumference. In the step for rotating at least one among the first cylindrical part and the second cylindrical part, said at least one among the first cylindrical part and the second cylindrical part is rotated in the circumferential direction at least in the period from the formation of the molten pool to the solidification of the molten pool.
Inventors:
TACHIBANA NOBUHIRO (JP)
HOKAZONO SHUNSUKE (JP)
HOKAZONO SHUNSUKE (JP)
Application Number:
PCT/JP2023/032619
Publication Date:
March 21, 2024
Filing Date:
September 07, 2023
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B23K26/21; B23K26/08
Domestic Patent References:
| WO2018159206A1 | 2018-09-07 | |||
| WO2012171692A1 | 2012-12-20 |
Foreign References:
| JP2019129126A | 2019-08-01 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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