UltraMig 175
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Operating and welding instructions
1. How to hold the welding torch
When approaching the working piece with the welding
torch, it is important to use the following technique:
A. Slope the torch at an angle between 45
o
to 60
o
to
the work surface and direction of the weld.
B. For the best results, the operator should move at an
appropriate angle for the work being done.
C. THE TORCH SHOULD NOT BE MOVED AWAY
FROM THE SURFACE ONCE WELDING HAS
BEGUN. Pulling back the torch causes very poor weld
quality and generates spatter. The distance between
the welding nozzle and the workpiece should be about
6mm (1/4”).
D. Two basic welding techniques may be used. (see
fig. 1)
Figure 1
In most cases, the speed with which the welding torch
is moved will determine the shape of the weld bead.
The average torch speed is from 40 cm to 50 cm/min
(15 to 20 inches/min.). A mixture with ARGON and
CO
2
(ex. 75/25) gas is a good choice for welding
regular steel, especially for achieving a clean, strong
weld.
Pure argon is used for welding aluminum.
Argon gas may only be used for welding steel when it
is mixed with CO
2
. NOTE: All gases are supplied
from the cylinder under very high pressure (from 2000
psi - 150 kg/cm
2
to 3000 psi - 200 kg/cm
2
). A properly
rated gas regulator is required to lower that pressure.
Содержание UltraMig 175
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