Title:
ARC WELDING CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2018/025572
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce the amount of sputtering in a welding method wherein a welding wire feed rate is alternately switched between a forward feed period and a reverse feed period. Provided is an arc welding control method that switches a feed rate Fw for welding wire alternately between a forward feed period and a reverse feed period, repeats a short period and an arc period, and electrifies with a welding current Iw switched to a small current value in the latter half of the arc period, wherein a basic voltage setting value is set according to an average feed rate setting value, the error amplitude value for a voltage setting value and the basic voltage setting value is calculated, and the timing (current reduction time Td) for switching the welding current Iw to the small current value is varied on the basis of the average feed rate setting value and the error amplitude value.
Inventors:
ONO KOHEI (JP)
NAKAMATA TOSHIAKI (JP)
NAKAMATA TOSHIAKI (JP)
Application Number:
PCT/JP2017/024849
Publication Date:
February 08, 2018
Filing Date:
July 06, 2017
Export Citation:
Assignee:
DAIHEN CORP (JP)
International Classes:
B23K9/073; B23K9/12
Domestic Patent References:
| WO2012046411A1 | 2012-04-12 | |||
| WO2013008394A1 | 2013-01-17 |
Foreign References:
| JP2012006020A | 2012-01-12 |
Other References:
See also references of EP 3495084A4
Attorney, Agent or Firm:
KOH-EI PATENT FIRM, P.C. (JP)
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