Design and function
TIG welding
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29.07.2011
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5.6.8.5
Spotmatic
The arc is ignited fully automatically without actuating the torch trigger by simply touching the tip of the
electrode with the workpiece. Hundreds of reproducible tacks can be made without tungsten inclusions.
NOTE
Selection and adjustment are made in the same way as with spotArc operating mode
(see chapter TIG spotArc).
Figure 5-13
NOTE
In order to achieve an effective result, the upslope time should be set to "0 s".
Sequence
The procedure is shown with the example of the HF ignition type. Arc ignition with Liftarc is, however, also
possible (see chapter entitled "Arc ignition").
• The torch trigger must first be pressed once to activate the function. The spotArc signal light starts to
flash rapidly. The user must now start the welding process within 30 s.
• Position the torch gas nozzle and tungsten electrode tip carefully on the workpiece.
• Incline the torch over the torch gas nozzle until there is a gap of approx. 2-3 mm between the
electrode tip and the workpiece.
Shielding gas flows in the set gas pre-flow time.
The arc ignites and the previously set welding current flows.
The main current phase ends when the set spotArc time expires.
The welding current drops in the set downslope time to the end current.
The gas post-flow time expires and the welding process ends.
If the welding torch with the electrode tip is placed again on the workpiece, the next welding process is
started.
