Title:
SOLID WIRE FOR GAS METAL ARC WELDING AND GAS METAL ARC WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/203336
Kind Code:
A1
Abstract:
The present invention provides a solid wire for gas metal arc welding that is suitable as a welding material for a high-Mn steel material, and a gas metal arc welding method using this solid wire. The solid wire has a composition that contains, by mass%, 0.20-0.80% C, 0.15-0.90% Si, 17.0-28.0% Mn, 0.030% or less P, 0.030% or less S, 0.01-10.0% Ni, 0.4-1.9% Cr, 0.0010-0.0050% B, with the remainder being Fe and unavoidable impurities, and in which the SFE, which is defined as SFE (mJm2) = −53 + 6.2Ni + 0.7Cr + 3.2Mn + 9.3Mo), satisfies the range of 17-57 (mJ/m2). This solid wire has superior manufacturability, has superior high-temperature cracking resistance with no generation of cracks during welding and, when used in gas metal arc welding, enables a weld joint portion that has high strength and ductility and superior ultra-low-temperature impact toughness to be easily produced.
Inventors:
IZUMI DAICHI (JP)
TAKADA ATSUSHI (JP)
TAKAYAMA NAOKI (JP)
UEDA KEIJI (JP)
YAMASHITA KEN (JP)
HAN PENG (JP)
TAKADA ATSUSHI (JP)
TAKAYAMA NAOKI (JP)
UEDA KEIJI (JP)
YAMASHITA KEN (JP)
HAN PENG (JP)
Application Number:
PCT/JP2020/012216
Publication Date:
October 08, 2020
Filing Date:
March 19, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
KOBE STEEL LTD (JP)
KOBE STEEL LTD (JP)
International Classes:
B23K35/30; B23K9/23; C22C38/00; C22C38/38
Domestic Patent References:
| WO2017192619A1 | 2017-11-09 |
Foreign References:
| JPS5524701A | 1980-02-22 | |||
| JP2013103232A | 2013-05-30 | |||
| JPH0321572B2 | 1991-03-25 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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