Title:
WELDED JOINT, WELDING MEMBER AND PRODUCTION METHOD FOR SAME, AND RESISTANCE SPOT WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/233705
Kind Code:
A1
Abstract:
Provided is a welded joint wherein cracking at a welded portion is minimized and a nugget diameter of desired size is realized even when at least one of surface steel sheets in a sheet set is a galvanized steel sheet and when the thickness ratio of the surface steel sheets and the effect of disturbance are great. In the present invention, the indentation rate b/T at a shoulder part of the sheet set satisfies formula (1) and/or formula (2). (1): b/T≤0.6/(T/tU)0.5×(980/SU)0.5
(2): b/T≤0.6/(T/tL)0.5×(980/SL)0.5
Inventors:
YAMAGISHI DAIKI (JP)
SAWANISHI CHIKAUMI (JP)
KAWABE NAO (JP)
TAKASHIMA KATSUTOSHI (JP)
TANIGUCHI KOICHI (JP)
MATSUDA HIROSHI (JP)
SAWANISHI CHIKAUMI (JP)
KAWABE NAO (JP)
TAKASHIMA KATSUTOSHI (JP)
TANIGUCHI KOICHI (JP)
MATSUDA HIROSHI (JP)
Application Number:
PCT/JP2023/002727
Publication Date:
December 07, 2023
Filing Date:
January 27, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K11/16; B23K11/11; B23K11/24
Domestic Patent References:
| WO2020212741A1 | 2020-10-22 | |||
| WO2017038981A1 | 2017-03-09 |
Foreign References:
| US20110253681A1 | 2011-10-20 | |||
| JP2020127958A | 2020-08-27 | |||
| US20120193331A1 | 2012-08-02 | |||
| JP2019072764A | 2019-05-16 | |||
| JP2010247215A | 2010-11-04 | |||
| JP2003236676A | 2003-08-26 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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