Technology

SuperMig Welding Technology

SuperMIG® A hybrid welding system based on two technologies:

  • PAW technology – plasma welding delivered by electrical current formed between a tungsten electrode and a base metal using an inert gas.

  • GMAW or MIG : arc welding created between metal wire and base metal in active gas environment.

  • Integrating those two technologies/enrgies enables to increase Welding productivity and quality

Plasma and GMAW working simultaneously

When working simultaneously, the plasma arc and the GMAW arc are rejecting each other

In order to get the plasma spot as close as possible to the wire (impingement spot), the deviation of plasma must be controlled and forced back to the wire direction

Special electromagnets located on the nozzle end of the SuperMIG® torch are designed to apply the required force in order to push  the plasma to the impingement spot and keep it in place during the welding process

The electromagnets create 2 forces, the direction is based on the interaction of two magnetic fields, one force keeps plasma in center and the other one “returns” the plasma to eliminate GMAW force. 

Electro magnets structure

Process description

Energy necessary to melt the base material (penetration) is provided by the plasma arc,

  • Filler metal to compose the weld metal is provided by the GMAW arc as well as contributing to full penetration as additional heat is also provided by the GMAW.

Process Sequence

Tests made by CTC (concurrent Technologies Corp. USA )

Flat position weld development (1/2” EH36 Steel))

  • Successful single-pass welds were produced with a 0.06″ root opening and a copper bar backing,
  • For comparison purposes, two-pass GMAW-only welds were produced using a 60° bevel.<!–  

Flat position weld development (1/2” EH36 Steel))

  • Single-pass welds were successfully made on each side (travel speed of 15 in/min),
  • GMAW-only comparison welds were made using 50° double-V welds, two passes.

Smig ® Performances and advantages Summary

  • Welds Up to 12 mm thick, one pass , no preparation needed
  • Deep weld penetration
  • High weld travel speeds
  • Reduced heat input
  • Narrow heat affected zone.
  • Fast ROI