METHOD FOR MANUFACTURING WELDED JOINT

Title:

METHOD FOR MANUFACTURING WELDED JOINT

Document Type and Number:

Japanese Patent JP2022061854

Kind Code:

A

Abstract:

To provide a method enabling a welded joint to be manufactured by practically reducing a load of preheating work in welding a wear resistant steel.SOLUTION: A welded joint in which a weld metal has a prescribed chemical composition is manufactured by subjecting a wear resistant steel having a prescribed Brinell hardness and having a small amount of Mn segregation at a plate thickness center, to gas shielded welding using a flux-cored wire in which a content of fluoride relative to a total wire mass is 0.10-2.50% in terms of F, and a moisture content is 300 ppm or less, and further which has a seamless shape with no slit-like gaps.SELECTED DRAWING: None

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Inventors:

KAMO TAKAHIRO
WATANABE KOTARO
KAWAMOTO YUZO
HOSHINO MANABU
SHIRAHATA HIROYUKI

Application Number:

JP2020170056A

Publication Date:

April 19, 2022

Filing Date:

October 07, 2020

Export Citation:

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Assignee:

NIPPON STEEL CORP

International Classes:

B23K35/30; B23K9/16; B23K35/368; C22C38/00; C22C38/54

Attorney, Agent or Firm:

Kazuya Sasaki
Naruse Katsuo
Shuji Hisamoto
Eiichi Sano
Katsumi Hara

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