WilTec TIG180 Operation Manual page 11

Setting the amount of shielding gas
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Electric shock!
The amount of shielding gas being set, the welding torch has no-load voltage or, if appli-
o
cable, high-voltage ignition pulses which can lead to electric shocks and burns if touched.
Keep the welding torch electrically isolated from people, animals, or objects while setting.
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Set the amount of shielding gas on the flow meter of the pressure reducer.
o
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Rule of thumb for the gas flow rate:
The diameter in mm of the gas nozzle corresponds to
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Example: 7 mm gas nozzle corresponds to 7
o
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Bad shielding gas settings!
Both too low and too high a shielding gas setting can bring air to the weld pool and lead
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to pore formation.
Therefore: Adjust the amount of shielding gas according to the welding task!
o
Which gas is to be used for TIG welding?
Tungsten inert gas welding (TIG) is inert gas welding with a non-consumable electrode made of pure
or alloyed tungsten. The arc burns freely between the electrode and the workpiece. The arc is protect-
ed by argon, helium, or their mixtures. For applications with high-alloy steels, argon-hydrogen mixtures
are also used, which can lead to a considerable increase in productivity.
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Make sure that the on/off switch is on and the power indicator is lit.
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Set the MMA / TIG switch to "TIG."
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Open the shielding gas cylinder valve and set the required flow rate.
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The fan now starts. Pull the trigger on the welding torch to open the solenoid valve. The
shielding gas begins to flow out of the torch nozzle. At the same time, the HF ignition sounds.
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Set the welding current to match the thickness of the workpiece.
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The distance from the welding electrode to the workpiece must be 2–4 mm.
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Press the control key to ignite the arc. The HF noise disappears and you can start welding.
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Select the run-on time of the torch with the fall time control.
Description of MMA welding
The polarity depends on the information provided by the electrode manufacturer on the electrode
packaging.
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Make sure that the on/off switch is on and the power indicator is lit.
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Set the MMA / TIG switch to "MMA."
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Set the welding current to match the thickness of the workpiece.
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The weldseam is adjusted with the welding current regulator.
Note: Do not touch any cables or plugs while the machine is operating, as this can result in injuries or
damages to the machine.
© by WilTec Wildanger Technik GmbH
http://www.WilTec.de
http://www.aoyue.eu
http://www.teichtip.de
⁄ gas flow.
ℓ
min
Item 61707, 61708
ℓ ⁄ gas flow rate.
min
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