Jasic Cut 45 - Gouging Procedure

14
Gouging
Gouging creates a smooth, clean concaved groove within the material being gouged which is oen weld ready. This process is primarily used
for weld removal or back gouging.
Gouging has specic consumables and sengs depending on the gouge you need to produce which include the gouging p, shield cup and
gas distributor that would be specic to gouging.
To begin the gouging process, hold the p of the torch approximately 12mm from the workpiece angling the torch approximately 20°-40° to
the surface, engage the pilot arc and once established slowly move the p closer to the work piece unl the main arc has transferred. Once
the main arc is established, retract the p unl the distance from the work piece to the p is approximately 15mm.
Make sure that you keep the p of the torch angled approximately 20°-40° during this enre gouging process.
To create a narrow u-groove in the workpiece, the operator should maintain a constant, smooth travel speed.
With this technique the gouge created will be approximately 6mm wide by 6mm deep but this may depend on the gouging p prole.
To create a wider groove, you can oscillate the plasma torch side to side in a half-moon sequence while maintaining a constant, smooth
travel speed. The gouge created will be wider but not as deep. Due to the nature of the gouging process, lead covers, gouging deectors
and torch covers are some accessories that will help to protect the equipment used in the gouging process.
Gouging can be done on all conducve materials.
Before you start gouging, check the torch, consumables, and cables for excessive wear and damage. If the electrode, swirl ring or the cung
p orice shows signs of wear and tear, replace it with a new component that is sized correctly for your unit and applicaon. Cung or
gouging with worn-out consumables only leads to poor cung/gouging performance.
Use clean, dry workshop air (install a lter if necessary) and match pressure and ow requirements to those of the plasma cuer. Adjust the
gas pressure on the machine according to the owner’s manual. For torch leads longer than 6m, add 4 PSI for each addional 6m. Seng the
pressure when the air is owing through the torch will ensure that you have proper pressure and airow while cung.
Plasma Cung Techniques
Wilkinson Star Technical