Title:
LASER-ARC HYBRID WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/059149
Kind Code:
A1
Abstract:
Provided is a laser-arc hybrid welding method with which it is possible to control the form of droplet transfer and thereby significantly reduce the occurrence of sputtering, and to set a low welding current and thereby minimize heat deformation and the effects of heat accompanying welding. The present invention is a laser-arc hybrid welding method in which the minimum diameter DMIN (mm) of droplets transferring from a welding steel wire to a molten pool produced by gas-shielded arc welding satisfies the relationship DMIN ≥ (P/15) + (1/2) with respect to the output P (kW) of a laser generated by laser welding, and the maximum diameter DMAX (mm) of the droplets satisfies the relationship M ≥ 4DMAX/3 with respect to the length M (mm) of an arc produced by the gas-shielded arc welding.
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Inventors:
IWATA SHOHEI (JP)
OKITA YASUAKI (JP)
KITANI YASUSHI (JP)
OKITA YASUAKI (JP)
KITANI YASUSHI (JP)
Application Number:
PCT/JP2018/034363
Publication Date:
March 28, 2019
Filing Date:
September 18, 2018
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B23K26/348; B23K35/30
Domestic Patent References:
| WO2010061422A1 | 2010-06-03 |
Foreign References:
| JP2015526295A | 2015-09-10 | |||
| JP2005270995A | 2005-10-06 | |||
| JP2005219062A | 2005-08-18 | |||
| JP2004188428A | 2004-07-08 |
Other References:
"Classification of Metal Transfer on arc electric welding processes", IIW DOC. XII-636-76, 1976
See also references of EP 3623096A4
See also references of EP 3623096A4
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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