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OM-249 795 Page 34
6-5.
Stick Start Procedure
−
Scratch Start Technique
With Stick selected, start arc as
follows:
1
Electrode
2
Workpiece
3
Arc
Drag electrode across workpiece like
striking a match; lift electrode slightly
after touching work. If arc goes out
electrode was lifted to high. If
electrode sticks to workpiece, use a
quick twist to free it.
1
2
3
6-6. Lift-Arc
t
TIG With Auto-Crater
t
And Auto-Stop
t
WM Marketing
Arc Start With Lift-Arc
Arc End With Auto-Crater
Arc End With Auto-Stop
1
2
1
2
2
1
3
3
4
Arc Start With Lift-Arc TIG
Lift-Arc is used for the DCEN
GTAW process when HF Start
method is not permitted.
Select Lift-Arc at Process/Contac-
tor switch.
Turn gas on.
1
Touch or scratch.
2
Lift at any angle.
Touch tungsten electrode to
workpiece at weld start point.
Slowly lift electrode. Arc is started
when electrode is lifted.
Maintain shielding gas coverage
and eliminate tungsten and work-
piece contamination by using
Auto-Crater or Auto-Stop to end
the arc.
Arc End With Auto-Crater:
Remote control is not needed
when using Auto-Crater.
1
While welding.
2
Lift torch slightly to start
Auto-Crater end (current is
reduced).
3
Lower torch. Weld current
ramps down.
4
Shielding gas continues until
shut off.
Arc End With Auto-Stop:
1
While welding.
2
Lift torch to start Auto-Stop.
(Lift higher than that needed
to start Auto-Crater.) Arc
stops.
3
Move torch back down to
maintain gas coverage and
prevent contamination.
OR
