UltraMig 175
- 12 -
2. Welding steel
A. Use a gas mixture of 25% CO2 and 75% ARGON
with a 10 to 16 l/min flow.
B. Use the correct wire size and contact tip to match
(0.6 tip for .023 wire, etc.).
C. Hold the welding torch as described before.If the
torch is held further away from the work, it will result by
a wider and thinner weld bead. (see fig. 2).
D. Begin welding by turning the control knob on the
torch to its lowest position and pull the trigger.
Gradually increase the setting until the arc is steady
and even.
E. When welding on a slope (fig. 3), the penetration of
the weld will decrease as the slope increases. The
weakest penetration occurs during vertical and
overhead welding.
F. It is advantageous to use a larger wire size on thick
material in order to obtain a correct, safe level of
penetration. A larger wire size allows a higher welding
current output.
G. Gas pressure will need to be increased in sloped,
vertical, and upside down positions, and in places
where the workpiece in not very clean (e.g. a wheel
well).
Figure 2
Figure 3
