Design and function
MIG/MAG welding
099-002060-EW501
19.10.2015
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5.9.2.1 Setting the shielding gas quantity
Welding process
Recommended shielding gas quantity
MAG welding
Wire diameter x 11.5 = l/min
MIG brazing
Wire diameter x 11.5 = l/min
MIG welding (aluminium)
Wire diameter x 13.5 = l/min (100 % argon)
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
Incorrect shielding gas setting!
• If the shielding gas setting is too low or too high, this can introduce air to the weld pool and
may cause pores to form.
• Adjust the shielding gas quantity to suit the welding task!
