Title:
溶接部の疲労強度に優れた溶接部材及びその製造方法
Document Type and Number:
Japanese Patent JP7432723
Kind Code:
B2
Abstract:
One embodiment of the present invention relates to a welded member obtained by overlapping portions of two sheets of base metal and performing fillet welding thereon using weld material, and provides a welded member having excellent fatigue strength of welded portion, and a method for manufacturing same, the welded member comprising base metal, a weld bead and root-reinforcing weld metal, wherein the base metal has a tensile strength of 780 MPa, the weld bead has a toe angle of 160 degrees or greater and the weld bead and the root-reinforcing weld metal have a Vicker's hardness of 280-320 Hv and a fatigue strength of 350 MPa or higher.
Inventors:
Be, Gyu-yol
Lee, San-Min
Lee, San-Min
Application Number:
JP2022532777A
Publication Date:
February 16, 2024
Filing Date:
December 07, 2021
Export Citation:
Assignee:
POSCO Holdings Inc.
International Classes:
B23K31/00; B23K9/02; B23K9/23; B23K35/30; C22C38/00; C22C38/14; C22C38/58
Domestic Patent References:
| JP2014004609A | ||||
| JP2008137024A | ||||
| JP2013220431A |
Attorney, Agent or Firm:
Patent Attorney Corporation Kyosei International Patent Office