Method and device for arc welding with consumable electrode comprising alternating short-circuit welding cycles and pulsed transfer welding cycles

摘要

Arc welding procedure with consumable electrode, one of whose ends is progressively fused by an electric current that feeds the electrode, said procedure comprising a number n1, n1 = 1, of short-circuit welding cycles that alternate with a number n2 , n2 = 1, of pulsed transfer welding cycles, whose short-circuit welding cycles each comprise an arc period followed by a short-circuit period in which the melting metal establishes a short circuit with a bath of fusion, characterized in that it comprises a displacement of the electrode at a velocity V1 during the arc period and a decrease in the displacement velocity of the electrode to a value V3, V3 V1, during the short-circuit period, and a displacement of the electrode at a VP velocity during the pulsed transfer cycle, the VP velocity being greater than the V1 velocity.