Functional welding sequence:
- The pad is placed onto the base material the current circuit is closed
- Preflow of shielding gas
- Coil current is switched on and magnetic field is generated
- Power unit is switched on and arc voltage is provided
- Lift of pad
- Ignition of pilot arc and then ignition of welding arc between pad and plate
- Burning of rotating arc along the ring-shaped welding area
- At the end of welding time, the pad is lowered and plunged into the liquid weld pool
- Electrical short-circuit and cut-off of welding current
- Formation and solidification of weld seam with post-flow time of shielding gas
