Design and function
MIG/MAG welding
50
099-005313-EW501
02.09.2015
Interval
Figure 5-20
Start
• Press and hold torch trigger.
• Shielding gas is expelled (gas pre-flows).
Sequence
• Arc ignites after the wire electrode makes contact with the workpiece at creep speed.
• Welding current flows.
• Wire feed speed increases to the set nominal value.
• The wire feed stops after the spot time elapses.
• Arc is extinguished after the wire burn-back time elapses.
• The process is repeated when the pause time is over.
End
• Release torch trigger, wire feed stops, arc is extinguished, gas post-flow time elapses.
If the pause time is less than 3 s, wire creep only takes place in the first spot phase.
When the torch trigger is released, the welding process is also ended even before the spot time elapses.
