EWM drive 4 Basic - Shielding Gas Supply (Shielding Gas Cylinder for Welding Machine); Gas Test; Setting the Shielding Gas Quantity

Design and function
Shielding gas supply (shielding gas cylinder for welding machine)
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099-005401-EW501
17.06.2014
5.6 Shielding gas supply (shielding gas cylinder for welding machine)
5.6.1 Gas test
• Slowly open the gas cylinder valve.
• Open the pressure regulator.
• Switch on the power source at the main switch.
• Trigger gas test function on the machine control inside the machine.
• Set the relevant gas quantity for the application on the pressure regulator.
• The gas test is triggered at the machine control inside the machine by pressing the key.
The shielding gas will flow as long as you keep the button pressed.
5.6.2 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
NOTE
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!