Title:
RESISTANCE SPOT WELDING METHOD AND WELDED JOINT MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/070459
Kind Code:
A1
Abstract:
Provided is a resistance spot welding method suited for manufacturing a welded joint that exhibits superior delayed fracture resistance. In the resistance spot welding method, two or more superimposed steel plates are sandwiched between a pair of welding electrodes and energized while being pressurized to form a nugget on the superimposed surfaces of the steel plates, and the steel plates are thereby bonded, the resistance spot welding method being characterized in that, after the bonding, a steady magnetic field is applied to a weld mark generated on the surface of the bonded steel plates through the bonding such that the magnetic flux density becomes 0.1-15 T at an angle θ, formed by a surface normal direction of the bonded steel plates and the application direction of the steady magnetic field, exceeding 0°.
More Like This:
| WO/1987/005841 | HIGH FREQUENCY WELDING SYSTEM |
| JP4361066 | Sequence control device for work clamp device for spot welding |
Inventors:
ENDOH KAZUKI (JP)
MAEDA SATOSHI (JP)
TOJI YUKI (JP)
KAWABE NAO (JP)
MAEDA SATOSHI (JP)
TOJI YUKI (JP)
KAWABE NAO (JP)
Application Number:
PCT/JP2023/031609
Publication Date:
April 04, 2024
Filing Date:
August 30, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K11/11; B23K11/16; B23K11/36
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF: