Title:
ARC-WELDED JOINT AND ARC-WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/230904
Kind Code:
A1
Abstract:
Provided are an arc-welded joint and an arc-welding method. This arc-welded joint has a welded part obtained by overlapping and arc-welding at least two steel plates, wherein, when the area of the surface of a weld bead in the welded part is a bead surface area SBEAD and the area of a region that is of the bead surface area SBEAD and is covered by slag is a slag surface area SSLAG, a slag covered area ratio SRATIO as calculated by SRATIO = 100×SSLAG/SBEAD is 20% or less, and when the maximum value of the Vickers harness of the welded metal in the welded part is Hmax and the minimum value of the Vickers hardness of the welded metal is Hmin, and the average value of the Vickers hardness of the softened part of the weld heat-affected zone is HHAZ, the Vickers hardness of the softened part of the welded metal and the weld heat-affected zone satisfies relationships Hmax≤550 and Hmin≥1.07XHHAZ.
More Like This:
Inventors:
KONISHI KYOHEI (JP)
MATSUDA HIROSHI (JP)
TANIGUCHI KOICHI (JP)
MATSUDA HIROSHI (JP)
TANIGUCHI KOICHI (JP)
Application Number:
PCT/JP2022/018950
Publication Date:
November 03, 2022
Filing Date:
April 26, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K9/00; B23K9/073; B23K9/16; B23K9/173
Domestic Patent References:
| WO2018159404A1 | 2018-09-07 | |||
| WO2013132550A1 | 2013-09-12 |
Foreign References:
| JPS61289978A | 1986-12-19 | |||
| JP2007119811A | 2007-05-17 | |||
| JP2013184216A | 2013-09-19 | |||
| JP3905876B2 | 2007-04-18 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
Download PDF:
Previous Patent: ARC WELDED JOINT AND ARC WELDING METHOD
Next Patent: ARC-WELDED JOINT AND ARC-WELDING METHOD
Next Patent: ARC-WELDED JOINT AND ARC-WELDING METHOD