OPERATION
4-11
Operator Manual
Gouging
The Powermax900 can be used for gouging mild steel by using the optional gouging nozzle and
gouging shield. To gouge:
• Always wear full protection:
- A welding helmet with at least a #8 lens shade
- Welding gloves
- A welding jacket
The arc is fully exposed and will cause serious burns if the skin is not covered.
• Install the gouging nozzle and shield just as you would install a standard cutting nozzle and
shield. See
Changing Consumable Parts
earlier in this section.
• Adjust the air pressure to 50–55 psi (3.4–3.8 bar) with air flowing from the torch. Note that this
is lower than the cutting pressure.
• Start a transferred arc by holding the torch pependicular to the workpiece. As soon as the arc
transfers, tilt the torch approximately 45° from the surface to be gouged and feed into the
gouge. Multiple passes or "wearing" may be necessary to gouge wider and deeper sections.
See Fig. 4-10.
Figure 4-10 Gouging
Direction of travel
45°
1. Hold torch perpendicular to the workpiece to start transferred arc.
2. Feed into the gouge.
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