Title:
AC NON-CONSUMABLE ELECTRODE ARC-WELDING CONTROL METHOD
Document Type and Number:
Japanese Patent JP2018192526
Kind Code:
A
Abstract:
To maintain an average current value to a specified value even if a weld cable is long in AC non-consumable electrode arc-welding.SOLUTION: In AC non-consumable electrode arc-welding control method for welding by conduction of AC welding current Iw, an average value of an absolute value of the welding current Iw is detected, and amplitude control for changing an amplitude of the welding current Iw is performed so that the average value becomes equal to a predetermined average current set value. Further, said amplitude control is performed only when an absolute value of a difference between the average value and the average current set value is a reference value or higher. In addition, said amplitude control is performed only during a prescribed period from an arc start. Consequently, an inductance value becomes large since a weld cable is long, and the average current value is maintained to a prescribed value even if a welding current waveform is changed, and therefore, a weld penetration depth can be stabilized.SELECTED DRAWING: Figure 2
Inventors:
TAKADA KENTO
NAKAMATA TOSHIAKI
NAKAMATA TOSHIAKI
Application Number:
JP2018029628A
Publication Date:
December 06, 2018
Filing Date:
February 22, 2018
Export Citation:
Assignee:
DAIHEN CORP
International Classes:
B23K9/073; B23K9/00; B23K9/067