HG soldatech EL120HG, User Manual, Page: 29 / 39

ENG
29
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 appea-
rance and free of slag or gas inclusions.
Holding the electrode
The best way to grip the electrode holder is the way that feels most comfor-
table to you. To 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.
Striking the arc
Exposure to a welding arc is extremely harmful to the eyes and skin.
•Never strike an arc or begin welding until you have adequate protection.
• Wear flameproof welding gloves, heavy long-sleeved shirt, cuffless trousers,
high-topped shoes and a welding helmet or shield.
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.Beginners may usually get sticking or arc ex-
tinguishing. When the rod sticks to the work piece, gently rock it back and
forth to make them separate. If not, the circuit is short connection, and it will
overload the welder. A good arc is accompanied by a crisp, cracking sound.
The sound is similar to that made by eggs frying. To lay a weld bead, only 2
movements are required; downward and in the direction the weld is to be
laid, as in following figure: