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21A
SETTING UP AND WELDING
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Place the pistol perpendicular to the work piece with
the stud touching down at the desired location to be
welded. Press down on the pistol until the ceramic
ferrule rests firmly on the work piece. Press the
trigger to initiate the weld sequence.
See the section on Studwelding Techniques for
further advice.
The welding process is as follows: -
1. Start.
2. Pistol lifts stud.
3. Pilot Arc strikes.
4. Main Arc strikes melting both stud and workpiece.
5. Arc stops. Pistol plunges stud into molten pool.
6. Weld complete.
Having welded the stud, draw the pistol vertically off
the stud. Failure to do this may cause the split tines
of the chuck to splay out. This will result in the chuck
and stud arcing together during subsequent welds.
Finally, remove the ferrule by lightly tapping until it shatters. Visually
inspect the weld.
For a guide to the inspection of the welded stud see the sections on
Inspecting and Testing Welded Studs.
1
2
3
4
5
6
