Buffalo Tools GEN4000DF-STW, Инструкция по эксплуатации

Страница: 43 / 46

GEN4000DF-STW 4000 Surge Watt / 3500 Running Watt Portable Dual Fuel Gen Welder 43
5. 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.
6. 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.
6.1 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.
6.2 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.
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 (as the electrode is consumed) and in the direction the weld is to be
laid, as in following figure: