Welding method with indirect arc between double welding wires alternately changed to form by-pass arc

Welding method with indirect arc between double welding wires alternately changed to form by-pass arc

  • CN 103,521,885 A
  • Filed: 09/25/2013
  • Published: 01/22/2014
  • Est. Priority Date: 09/25/2013
  • Status: Active Application
First Claim
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1. twin-wire indirect arc replaces the welding method of bypass, it is characterized in that, comprise the following steps:

  • two identical root wires are sent to respectively by two wire-feed motor with the angle of 30-60 °

    , two root wires are positioned at the top of welded piece, two electrodes of AC welding power source are connected with the ignition tip of two root wires respectively, and set up indirect arc between two root wires, utilize the energy of indirect arc to melt the welding wire of sending to;

    The direct current source of welding current is anodal to be connected with reversing switch, the another two ends of reversing switch are connected with two root wires respectively, direct current source of welding current negative pole connects welded piece, by reversing switch, make alternately to set up successively between two welding wires and welded piece main arc, reversing switch replaces commutation work and adjusts the sense of current on welding wire, the commutating frequency of reversing switch wants consistent with the output current frequency of AC welding power source, and the current direction on same welding wire is identical simultaneously with AC welding power source to guarantee the direct current source of welding current.

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