Welding Parameters - Lincoln Electric Compact 220 Operating Manual

Welding Parameters

- The MIG/MAG welding method requires adjusting only two parameters:
- welding voltage Us
- electrode wire feed speed Vd
- Increasing of the electrode wire feed speed causes shorten the arc lenght,
increasing of the welding current and increasing of the depth of filling up.
- Decreasing of the wire feed speed causes lenghten the arc lenght, de-
creasing of the weleding current and decreasing ot depth of filling up.
- Increasing of the welding voltage causes lenghten of the arc lenght.
- Decreasing of the welding voltage causes shorten of the arc lenght.
- Too high electrode wire feed speed causes "pushing up" of the torch.
The electrode wire falls behind to melt into the arc and pushes back the
torch.
- Too low the electrode wire feed speed or too high welding voltage creates
big drops of melted metal on the end of the wire, which fall down into the
lake of liquid metal.
- Too big splashes show that the welding voltage is too low or the electro-
de wire feet speed is too high.
- You may increase the welding voltage about 1-4 V during making filling
welding seams /set the welding voltage switch in the upper position/.
Caution!
Surface of the work piece must be clean and must not show any rust, paint
or oily stains.
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