Title:
PROJECTION WELD JOINT MANUFACTURING METHOD, PROJECTION WELD JOINT, AND AUTOMOBILE COMPONENT
Document Type and Number:
WIPO Patent Application WO/2023/182266
Kind Code:
A1
Abstract:
A projection weld joint manufacturing method according to the present disclosure comprises: pressing a projection portion of a steel member, which includes the projection portion on a flat surface thereof, against a surface of a hot-stamped steel plate including, on the surface, an Al-based plating layer, and having the tensile strength of 1.5 GPa or more; performing first energization on the hot-stamped steel plate, the projection portion, and the steel member, and forming the projection portion into a projection welded part; quenching the projection welded part; and performing second energization on the quenched projection welded part, and tempering the edge of the projection welded part while keeping the central part of the projection welded part quenched.
Inventors:
YASUYAMA MASANORI (JP)
NAITO YASUAKI (JP)
IMAMURA TAKASHI (JP)
TOKUNAGA MASATOSHI (JP)
SHIMADA NAOAKI (JP)
NAITO YASUAKI (JP)
IMAMURA TAKASHI (JP)
TOKUNAGA MASATOSHI (JP)
SHIMADA NAOAKI (JP)
Application Number:
PCT/JP2023/010853
Publication Date:
September 28, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B23K11/14; B23K11/00; B23K11/16; B23K11/24; B23K11/36; C21D9/50; C22C21/02; C22C38/00; C22C38/04; F16B35/04; F16B37/06
Domestic Patent References:
| WO2018043099A1 | 2018-03-08 |
Foreign References:
| JP5834740B2 | 2015-12-24 | |||
| JP5708350B2 | 2015-04-30 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF: