FIELD: process engineering.
SUBSTANCE: invention relates to welding and may be used for automatic gas-metal arc welding and welding of aluminium by consumable electrode using alternating current rectangular pulse asymmetric in amplitude. Welding current source with internal inductance is used. To generate current pulse, reduced is inductance of welding circuit composed by secondary of matching transformer, electrode, arc space and article by changing matching transformer transformation factor.
EFFECT: decreased pulse current of supply circuit, expanded operating performances.
3 cl, 4 dwg
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