1. Plasma Arc / Jet Machining / Cutting
Uses plasma (high temp. ionized gas) to rapidly vaporize material

2. Plasma Arc Cutting
Uses plasma stream at very high temperatures to cut metal 10,000C to 14,000C
Plasma arc generated between electrode in torch and anode workpiece
The plasma flows through water‑cooled nozzle that constricts and directs plasma stream to desired location

3. Plasma Arc Cutting
When the power supply is on , an electric arc is produced between tungsten cathode electrode placed in torch and anode work piece. An inert gas ( Argon , H2, N2 ) is passed into the torch body in which arc is produced.
2. As gas comes in contact with the electric arc , the high velocity electrons of the arc collide with gas molecules , causing a breaking of the diatomic molecules into ions and electrons due to this gas gets heated and ionized resulting in a substantial increase in the conductivity of the gas which is now in plasma state.
3 This plasma is forced through the outlet orifice( water cooled nozzle ) of Torch . This results in the formation of plasma jet and material is removed by directing a high velocity jet of high temp. ionized gas to desired location on the work piece.

4. Plasma Arc Cutting (PAC)
• PAC temperatures:
10,000°C to 14,000°C
• Cutting flat metal sheets
and plates and hole
piercing and cutting
along a defined path
operated by hand-held
torch or automated by
CNC
• Can cut any electrically
conductive metals such
as carbon steel, stainless
steel, aluminum

5. Close-up view of a plasma arc
Plasma Arc Cutting
Close-up view of a plasma arc

6. Plasma Arc Cutting

7. Plasma Arc Cutting (PAC)

8. Plasma Arc Cutting (PAC)

9. Plasma Arc Cutting (PAC)
Applications
Pipe industry – preparing pipe edges for welding.
industries for shape cutting