Two stage welder and method of operating same

Details Two stage welder and method of operating same Two stage welder and method of operating same

B - Operations, Transporting

23

K

B23K 9/10 (2006.01)

Patent

CA 2474938

An electric arc GMAW welder (A) is provided, which welder (A) includes a high speed switching power supply (10) with a controller (130) for creating a first or second weld process across the gap between a workpiece (W) and a welding wire (E) advanced toward the workpiece (W). The first process uses a first current waveform and the second process uses a second current waveform. A circuit is provided for shifting between the first and second weld processes. The shifting circuit includes a counter (212) for counting the waveforms in the first and second processes and a circuit (190) to shift from the process being processed to the other weld process when the waveform count of the weld process being processed reaches a preselected number for such weld process.

L'invention concerne une machine à souder GMAW (A) à arc électrique, cette machine (A) comprenant une alimentation (10), pouvant commuter à vitesse élevée, avec une unité de commande (130) destinée à créer un premier ou un second processus de soudage à travers l'espace entre la pièce à souder (W) et un fil d'apport (E) avancé vers la pièce à souder (W). Le premier processus utilise une première forme d'onde de courant et le second processus utilise une seconde forme d'onde de courant. Un circuit permet de passer du premier processus de soudage au second. Ce circuit comprend un compteur (212) destiné à compter les formes d'onde dans les premier et second processus et un circuit (190) de passage du processus en cours à l'autre processus de soudage lorsque le compteur de formes d'onde du processus de soudage en cours atteint un nombre sélectionné pour ce type de processus.

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