Short-circuit welding method and welding device

A welding device and a short-circuit welding method uses successive welding cycles having respective arc and short-circuit phases. The method includes: conveying a welding wire from a workpiece, bringing the wire to a final rearward speed in a first rearward conveying phase and then conveying it at...

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Bibliographische Detailangaben
Hauptverfasser: Waldhoer, Andreas, Soellinger, Dominik
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A welding device and a short-circuit welding method uses successive welding cycles having respective arc and short-circuit phases. The method includes: conveying a welding wire from a workpiece, bringing the wire to a final rearward speed in a first rearward conveying phase and then conveying it at that speed until a second rearward conveying phase where the rearward speed is reduced; and conveying the wire toward the workpiece, the welding wire being brought to a final forward speed in a first forward conveying phase and being conveyed at that speed until the beginning of a second forward conveying phase where the forward speed is reduced. The first duration is adapted using a feedforward control and/or feedback control such that the welding wire does not exceed a specified reduced rearward speed in the second rearward conveying phase at the point in time at which the short-circuit is interrupted.