Title:
ARC WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/050014
Kind Code:
A1
Abstract:
The present invention provides an arc welding method capable of achieving a reduction in sputter generation amount and enhancement of electrodeposition coating performance of a welding portion even in the case where a shield gas containing a CO2 gas of 80 volume% or more is used. Provided is an arc welding method for welding a steel plate while alternately switching feeding between regular feeding and inverse feeding of a welding wire. A wire which contains Si: 0.01 mass% to 0.30 mass% (both inclusive), S: 0.001 mass% to 0.020 mass% (both inclusive), and Ti: 0.05 mass% to 0.30 mass% (both inclusive), has remaining chemical components appropriately controlled, and has a value of more than 1.0 determined from Expression (1), and a shield gas containing a CO2 gas of 80 volume% or more relative to an entire volume of the shield gas are used to perform welding at a frequency of 40 Hz to 200 Hz (both inclusive) with feeding of one regular feeding and inverse feeding as one cycle. (1): 2×[Ti]/[Si]-50×[S]
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Inventors:
KINASHI HIKARU
YOKOTA YASUYUKI
YOKOTA YASUYUKI
Application Number:
PCT/JP2021/029691
Publication Date:
March 10, 2022
Filing Date:
August 11, 2021
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
B23K9/12; B23K9/16; B23K35/30
Domestic Patent References:
| WO2015068273A1 | 2015-05-14 |
Foreign References:
| JP2018144103A | 2018-09-20 | |||
| JP2018020362A | 2018-02-08 | |||
| JP2018020361A | 2018-02-08 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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