Title:
WELDED JOINT
Document Type and Number:
WIPO Patent Application WO/2023/145823
Kind Code:
A1
Abstract:
[Problem] To further improve electrodeposition coatability at a weld bead part. [Solution] A welded joint according to the present invention has a first steel plate, a second steel plate, and a weld bead part formed by means of arc welding or laser welding, wherein: at least one of the first steel plate and the second steel plate has, in a non-heat-affected zone, a plating layer formed from predetermined components and an oxide layer positioned on top of the plating layer; and the weld bead part has a weld metal and a slag layer formed on a partial surface of the weld metal, wherein the slag layer comprises, by mass% when oxygen is excluded, 1.0 to 45.0% of Al, 1.0 to 30.0% of Mg, and the balance Fe, metal elements susceptible to oxidation, and impurities.
Inventors:
MATSUBA MASAHIRO (JP)
MITSUNOBU TAKUYA (JP)
URANAKA MASAAKI (JP)
NAKAMURA TOYOMITSU (JP)
MITSUNOBU TAKUYA (JP)
URANAKA MASAAKI (JP)
NAKAMURA TOYOMITSU (JP)
Application Number:
PCT/JP2023/002440
Publication Date:
August 03, 2023
Filing Date:
January 26, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C2/06; B23K9/23; B23K26/322; B23K35/30; C22C18/04; C22C21/10; C22C38/00; C22C38/14; C23C2/12; C23C2/26
Domestic Patent References:
| WO2018139620A1 | 2018-08-02 |
Foreign References:
| JP2011208264A | 2011-10-20 | |||
| JP2005230912A | 2005-09-02 | |||
| JP2022067423A | 2022-05-06 |
Attorney, Agent or Firm:
HAGIWARA, Yasushi et al. (JP)
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