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8.
SETTING THE AMPERAGE CONTROL
The welder has an infinite current control. It is capable of welding with electrodes up to 3/32” diameter. There
is no golden rule that determines the exact amperage required for every situation. It is best to practice your
welds on scrap metal which matches the metals you intend to work with to determine correct setting for your
job. The electrode type and the thickness of the work piece metal determine the amount of heat needed in the
welding process. Heavier and thicker metals require more voltage (amperage), whereas lighter and thinner
metals require less voltage (amperage).
Consult the welding electrode packaging for recommended welding amperage range.
9.
WELDING TECHNIQUES
The best way to teach yourself how to weld is with short periods of practice at regular intervals. All practice
welds should be done on scrap metal that can be discarded. Do not attempt to make any repairs on valuable
equipment until you have satisfied yourself that your practice welds are of good appearance and free of slag
or gas inclusions.
9.1 Holding the electrode
The best way to grip the electrode holder is the way that feels most comfortable to you. Position the Electrode
to the work piece when striking the initial arc it may be necessary to hold the electrode perpendicular to the
work piece. Once the arc is started the angle of the electrode in relation to the work piece should be between
10 and 30 degrees. This will allow for good penetration, with minimal spatter.
9.2
Striking the arc
EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND SKIN!
Prolonged exposure to the welding arc can cause blindness and burns. Never strike an arc or begin
welding until you are adequately protected. Wear flame-proof welding gloves, a heavy long sleeved
shirt, trousers without cuffs, high topped shoes, and an ANSI approved welding helmet.
Scratch the work piece with the end of electrode to start arc and then raise it quickly about 1/8 inch gap
between the rod and the work piece, see following picture
It is important that the gap be maintained during the welding process and it should be neither too wide or too
narrow. If too narrow, the rod will stick to the work piece. If too wide, the arc will be extinguished. It needs
much practice to maintain the gap. The beginners may usually get sticker or arc extinguishing. When the rod
is stuck to the work piece, gently rock it back and forth to make them separate. If not, a short circuit will occur
and it will break the welder.
