Ignition modes in TIG welding

TIG ignition modes determine the way in which the welding arc is ignited. Two ignition modes are available in TIG welding: Lift TIG ignition and High Frequency (HF) ignition.

High Frequency (HF) ignition

In HF ignition, a press on the torch trigger produces a high voltage pulse that creates a spark to ignite the arc.

Lift TIG ignition

In Lift TIG ignition you briefly touch the work piece with the electrode, then press the trigger and lift the electrode to a small distance from the work piece. Also known as “Touch ignition” or “Contact ignition”.