Setting The Shielding Gas Quantity - EWM Wega 401 M1.02 FKG Operating Instructions Manual

Design and function
Shielding gas supply
5.8.2

Setting the shielding gas quantity

Welding process
MAG welding
MIG brazing
MIG welding (aluminium)
TIG
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
75% Ar/25% He
50% Ar/50% He
25% Ar/75% He
100% He
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!
36
Recommended shielding gas quantity
Wire diameter x 11.5 = l/min
Wire diameter x 11.5 = l/min
Wire diameter x 13.5 = l/min (100 % argon)
Gas nozzle diameter in mm corresponds to l/min gas throughput
Factor
1.14
1.35
1.75
3.16
NOTE
099-005224-EW501
08.11.2011