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STRIKING THE ARC - WELDING
The most difficult aspect of the arc welding process, particularly for beginners,
is that of striking an arc. We strongly recommend that you practice on some
pieces of scrap metal to get the feel of the operation, before you start on an
actual welding job.
1. Hold the electrode about 10 mm from the work and at an angle of about
70° to 80° to the work surface; take care not to accidentally touch the
workpiece until you are ready to start.
2. Holding the welding mask close-up to your face, give a short stroke with
the electrode on the workpiece. As soon as the arc is primed, withdraw the
electrode from the workpiece to leave a tiny gap of around 1.5mm (1/16").
The current will flow across the gap with a crackling noise and a brilliant
arc. Continue to weld in one direction, maintaining the small gap as you
go.
NOTE:
When you prime the arc, be sure to withdraw the electrode swiftly
to leave the 1.5 mm. gap, otherwise the electrode will weld itself
to the workpiece. If this occurs give the electrode a short sharp
jerk to free it and, if necessary, prime the arc again. If you cannot
free the electrode, switch the machine off immediately and free
it. Take care the electrode will get red hot very quickly and will be
capable of burning through welding gloves.
3. At the end of the run, just lift the electrode away from the workpiece.
4. Inspect the job carefully. Any slag forming on the surface should be
chipped away with a chipping hammer or pick. ALWAYS wear your safety
goggles when chipping away slag.
WARNING: WHEN WELDING ALWAYS ENSURE THERE IS ADEQUATE
VENTILATION IN THE WORK AREA AS THE WELDING PROCESS GIVES OFF
TOXIC FUMES.
WARNING: WELDING ARCS PRODUCE HARMFUL UV/IR LIGHT WHICH CAN
SERIOUSLY DAMAGE YOUR EYES. ALWAYS USE A WELDING HELMET WITH
A SUITABLE FILTER THAT CONFORMS TO CURRENT STANDARDS.
WARNING: NEVER LOOK AT THE ARC WITHOUT A SUITABLE WELDING
MASK
WARNING: PROTECT BYSTANDERS BY USING WELDING SCREENS/
CURTAINS.
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