Design and function
MIG/MAG welding
099-005325-EW501
01.02.2017
29
Helium-rich gas mixtures require a higher gas volume!
The table below can be used to correct the gas volume calculated where necessary:
Shielding gas
Factor
75% Ar/25% He
1.14
50% Ar/50% He
1.35
25% Ar/75% He
1.75
100% He
3.16
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
Connection socket, "+" welding current
• ----------- MIG/MAG cored wire welding: Workpiece connection
2
"-" welding current connection socket
• ----------- MIG/MAG welding: Workpiece connection
3
Workpiece
• Insert the plug on the workpiece lead into the "-" welding current connection socket and lock.
5.2.2
Welding task selection
For selection of the welding task and for general operation see the relevant Wire feeder
instructions.
