RADLEY 1150-000, Руководство пользователя, Страница: 15 / 22

1150-000
INVERTER STICK WELDER KIT
14
1. SETTING THE AMPERAGE CONTROL
5/64, 3/32 electrodes.
There is no golden rule that determines the exact amperage required for every situation.
It is best to test 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 workpiece 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).
2. 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
that your practice welds are of good appearance and free of slag or gas inclusions.
2.1 HOLDING THE ELECTRODE
The best way to grip the electrode holder is the way that feels most comfortable to
you. To position the electrode to the workpiece when striking the initial arc it may be
necessary to hold the electrode perpendicular to the workpiece. Once the arc is started
the angle of the electrode in relation to the workpiece should be between 10 and 30
degrees. This will allow for good penetration, with minimal spatter.
2.2 STRIKING THE ARC
Scratch the work piece with the end of the electrode to
start an arc and then raise it quickly to about a 1/8" gap
between the rod and the workpiece.
See the following picture: It is important that the
gap be maintained during the welding process and
it should be neither too wide nor too narrow. If too
narrow, the rod will stick to the workpiece. If too
wide, the arc will be extinguished. It needs much
practice to maintain the gap. Beginners may usually
get sticking or arc extinguishing. When the rod sticks
to the workpiece, gently rock it back and forth to
make it release. If not, the circuit will be shorted, and
it will overload the welder. A good arc is accompanied
by a crisp, crackling 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 the following