Title:
METHOD FOR PRODUCING VERTICAL NARROW-GROOVE WELDING JOINT, AND VERTICAL NARROW-GROOVE WELDING JOINT
Document Type and Number:
WIPO Patent Application WO/2020/054717
Kind Code:
A1
Abstract:
Provided is a method for producing a vertical narrow-groove welding joint in which a welded part has exceptional toughness, the method involving the use of a thick-walled high-strength steel material. When two steel materials are butted via a narrow groove having a groove angle of 20° or less and are joined by vertical gas shield arc welding using a weaving, the advancement speed (mm/min) of vertical welding and the multiplicative inverse f(s-1) of a time (s) required for synchronizing the weaving in the vertical gas shield arc welding are adjusted to within ranges that satisfy the relationship v/60/f ≤ 9.0.
Inventors:
ARAO RYO (JP)
KOZUKI SHOHEI (JP)
UEDA KEIJI (JP)
HAYAKAWA NAOYA (JP)
KOZUKI SHOHEI (JP)
UEDA KEIJI (JP)
HAYAKAWA NAOYA (JP)
Application Number:
PCT/JP2019/035550
Publication Date:
March 19, 2020
Filing Date:
September 10, 2019
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K9/02; B23K9/022; B23K9/173; C22C38/00; C22C38/04; C22C38/58
Domestic Patent References:
| WO2015186544A1 | 2015-12-10 | |||
| WO2018037754A1 | 2018-03-01 |
Foreign References:
| JP6264520B1 | 2018-01-24 | |||
| JP2010115700A | 2010-05-27 | |||
| JP2001205436A | 2001-07-31 | |||
| JP6119948B1 | 2017-04-26 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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