Title:
METHOD FOR PRODUCING STEEL MEMBER
Document Type and Number:
WIPO Patent Application WO/2020/138468
Kind Code:
A1
Abstract:
The present invention provides a method for producing a steel member having a nut and/or a bolt with which high joining strength can be obtained in a stable manner. This method for producing a steel member, in which the steel member is manufactured by projection welding, is sequentially provided with a preliminary energization step, a cooling step having a non-energization time of 70 ms or greater, and a main energization step in which a current higher than that of the preliminary energization step is applied.
Inventors:
MURAYAMA GEN (JP)
FURUSAKO SEIJI (JP)
FURUSAKO SEIJI (JP)
Application Number:
PCT/JP2019/051543
Publication Date:
July 02, 2020
Filing Date:
December 27, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B23K11/14
Foreign References:
| JP2005297054A | 2005-10-27 | |||
| JP2012179646A | 2012-09-20 | |||
| JPS59699B2 | 1984-01-07 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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