O
PERATION
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.
Summary of Contents for powermax900
Page 1: ......
Page 15: ...SAFETY 1 6 Hypertherm Plasma Systems 8 99 ...
Page 21: ...SÉCURITÉ 1a 6 08 99 HYPERTHERM Systèmes plasma ...
Page 50: ...OPERATION 4 9 Operator Manual Figure 4 8 Dragging the Torch Figure 4 7 Cutting a Circle ...
Page 69: ...Operator Manual 5 14 MAINTENANCE PARTS ...
Page 73: ...APPENDIX B Operator Manual ...
