Plasma Cutting

About

The plasma gun uses as arc (like welding) coupled with a stream of compressed air to melt away metal using the torch. It can be used to cut thicker metals quickly, but leaves a rough surface finish.

Operating the plasma gun is very similar to a MIG welder. It is done in the welding bay in Brunsfield and require MIG training before operating. This is considered an advance manufacturing technology, please check in with a staff before commencing.

Operating Procedure

Preparation

Ensure the welding curtains are fully closed around the cutting zone.
Prepare your piece by marking your cuts and setting up a jig if repeated cuts are to be made.

Plasma Table

Clear all items from the surface of the plasma table.
Ensure both wheel casters are in the locked position.
With the help of another person, lift open the lid of the table until it hangs down at the side. Lift from both front corners slowly and set the lid down gently.
Pinching Hazard! The table lid is very heavy. Use caution and ask for hep if needed.

PPE Check

Wear a welding helmet or plasma glasses, gloves, welding jacket, long (non-systhetic) pants that are tucked over your boots, and safety boots.
Use hearing protection if required.
Use an N-95 mask or respirator.

Setup and Power-On

Connect the power cable to the back of the machine.
Check the air pressure and power settings on the plasma cutter.
Connect the air hose to the plasma cutter.
Turn on the ventilation system.
Clamp the ground lead securely to the workpiece.

Cutting Operation

Hold the torch perpendicular to the work surface at all times.
Cut only above the open table, do not stand under the torch while cutting.
Ensure nothing is in the way of your cut; the torch should slide smoothly along the surface of the piece.
Begin the cut off of the work piece, then slowly move to cut through the metal.
Maintain a steady speed, always allowing material to be blown out of the bottom of the cut.

Post-Cut Procedure

Turn off power and disconnect the air supply.
Let materials cool fully before handling them.
Coil cables neatly and store equipment safely.
Return all PPE to the cabinets

Clean-Up

Clear metal debris.
Ensure ventilation runs until fumes are dispersed.
Using a second person, carefully close the lid of the plasma table. A piece of metal can be used as a shim while closing to ensure fingers aren’t pinched.
Report any issues or damage.