Design and function
MIG/MAG welding
099-005664-EW501
22.09.2021
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5.2 MIG/MAG welding
5.2.1 Connection for workpiece lead
Some wire electrodes (e.g. self-shielding cored wire) are welded using negative polarity. In this
case, the welding current lead should be connected to the "-" welding current socket, and the
workpiece lead should be connected to the "+" welding current socket. Observe the information
from the electrode manufacturer!
Figure 5-10
Item Symbol Description
0
1
Workpiece
2
"-" welding current connection socket
• ----------- MIG/MAG welding: Workpiece connection
3
Connection socket, "+" welding current
• ----------- MIG/MAG cored wire welding: Workpiece connection
• Insert the plug on the workpiece lead into the "-" welding current connection socket and lock.
5.2.2 Welding torch connection
For connection description, see the relevant “Wire feeder” operating instructions.
5.2.3 Welding task selection
For selection of the welding task and for general operation see the relevant Control operating instructions.
5.3 MMA welding or gouging
5.3.1 MMA welding
Manual arc welding or, for short, MMA welding. It is characterised by the fact that the arc burns between
a melting electrode and the molten pool. There is no external protection; any protection against the atmo-
sphere comes from the electrode.
5.3.2 Air arc gouging
During gouging, an arc burns between a carbon electrode and the workpiece, heating the workpiece until
it is molten. At the same time, the molten metal is blown out with compressed air. Special electrode hol-
ders with a compressed-air connection and carbon electrodes are required for gouging.
