Title:
COMPOSITE WELDING METHOD
Document Type and Number:
Japanese Patent JP2021037519
Kind Code:
A
Abstract:
To provide a composite welding method by which post-welding deformation in welded members is reduced and excellent welding beads are formed.SOLUTION: Provided is a composite welding method composed of laser welding and arc-welding, and that performs welding under a condition in which: a front face of a first welded member is butted to an end face of a second welded member; a laser beam diameter φL of the laser welding and a welding wire diameter φA of the arc-welding are selected in a manner in which a formula (1) can be satisfied by a ratio (ρA/ρL) of an energy density ρA of the arc-welding to an energy density ρL of the arc-welding; a formula (2) is satisfied by a heat input amount QL of the laser welding and an input heat amount QA of the arc-welding; and a formula (3) is satisfied by a ratio (Vq/Vt) of a volume Vq of an apparent input heat area in the second welded member to a unit volume Vt of the first welded member in a contact area of the first welded member and the second welded member.SELECTED DRAWING: Figure 1
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Inventors:
SAKURADA YASUHIRO
NOBUTOKI TOMOKAZU
TOMIMURA HIROKI
NOBUTOKI TOMOKAZU
TOMIMURA HIROKI
Application Number:
JP2019158817A
Publication Date:
March 11, 2021
Filing Date:
August 30, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B23K26/348; B23K9/16; B23K26/00; B23K26/322
Domestic Patent References:
| JP2010125512A | 2010-06-10 | |||
| JP2019089099A | 2019-06-13 | |||
| JP2004195528A | 2004-07-15 |
Attorney, Agent or Firm:
Hayashi Ichiyoshi
Akihiro Kitamura
Akihiro Kitamura