FIELD: process engineering.
SUBSTANCE: proposed method may be used for welding of wear-resistant hardening coats by three-phase arc. Third phase of current source is connected to article in half-cycle opposite that of connecting filler wire. Interval of half-cycles corresponds to that of welding current set by current source frequency. Connection of article and wire allows cathodic cleaning of their surface. Wire and article may be connected in AC half-cycles in both straight and reverse polarity.
EFFECT: welding of materials differing in properties.
2 dwg
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