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Title:
ARC WELDING DEVICE AND ARC WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/057683
Kind Code:
A1
Abstract:
An arc welding device is provided with: a power output means for supplying welding power; a wire feed means for feeding welding wire in a forward direction and a reverse direction; and a control means for controlling the power output means and the wire feed means. During welding, a plurality of unit welding steps is performed repeatedly. Each unit welding step has a shorting step wherein the welding wire is shorted with base material and an arc step for generating an arc between the welding wire and the base material. When a period from the start of the arc step to reaching the maximum forward feed rate for the feed rate of the wire is called a transition period and the average value for the welding current in the shorting step and the arc step is called the average welding current, the control means sets a current suppression period, wherein the welding current becomes a value smaller than the average welding current, within the transition period. Letting T0 be the length of the transition period and T1 the length of the current suppression period, 0 < T1/T0 ≤ 0.8.

Inventors:
IDE AKIHIRO (JP)
Application Number:
PCT/JP2016/079032
Publication Date:
April 06, 2017
Filing Date:
September 30, 2016
Export Citation:
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Assignee:
DAIHEN CORP (JP)
International Classes:
B23K9/12; B23K9/073
Domestic Patent References:
WO2013190746A12013-12-27
Foreign References:
JP2015058454A2015-03-30
JP5170315B22013-03-27
Other References:
See also references of EP 3357624A4
Attorney, Agent or Firm:
YOSHIDA Minoru et al. (JP)
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