Title:
WELDING JOINT AND METHOD OF PRODUCING WELDING JOINT
Document Type and Number:
WIPO Patent Application WO/2022/054492
Kind Code:
A1
Abstract:
The present invention provides a welding joint which has excellent weld crack resistance. Abrasion resistant steel plates having a surface hardness of not less than 400 HBW, in terms of Brinell hardness, are welded together to obtain a welding joint. Adjustments are made to the steel plates which are the parent material, the welding material, and the welding conditions, etc., such that upon welding, the welded metal part has a composition including, by mass%, 0.20-0.80% of C, 0.10-0.90% of Si, 15.0-28.0% of Mn, not more than 0.030% of P, not more than 0.030% of S, 0.01-10.00% of Ni, 0.4-1.9% of Cr, and 0.01-5.00% of Mo. Thus, it is possible to produce a welding joint in which weld cracks are prevented without preheating or post heating.
Inventors:
TAKADA ATSUSHI (JP)
KITSUYA SHIGEKI (JP)
SUZUKI MASAMICHI (JP)
HAN PENG (JP)
KITSUYA SHIGEKI (JP)
SUZUKI MASAMICHI (JP)
HAN PENG (JP)
Application Number:
PCT/JP2021/029579
Publication Date:
March 17, 2022
Filing Date:
August 10, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
KOBE STEEL LTD (JP)
KOBE STEEL LTD (JP)
International Classes:
C22C38/00; B23K35/30; B23K35/40; C22C38/58
Domestic Patent References:
| WO2020039643A1 | 2020-02-27 | |||
| WO2020203334A1 | 2020-10-08 | |||
| WO2020203335A1 | 2020-10-08 |
Foreign References:
| EP2592168A1 | 2013-05-15 | |||
| JP2017502842A | 2017-01-26 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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