Plasma Cutters

Plasma cutting is a process that is used to cut steel and other metals using a plasma cutting torch.  Plasma cutting is an important process for any metal fabrication shop or business. Unlike oxy-fuel, plasma can cut stainless steel, aluminum, and brass, as well as mild steel.

	CUT-100 DC Inverter Air Plasma Cutter & welder 100AMP P-80 not-contacting torch $960.00 Time Left: 3h 49m
	CUT-50 Inverter Air Plasma Cutter & one year warranty $207.00 Time Left: 3h 54m
	3-IN-1 50A Plasma Cutter 200 Amp TIG MMA CUT Stick Arc Welder Cutter 110V 220V $439.95 $483.95 Time Left: 9h 26m
	3-IN-1 50A Plasma Cutter 200 Amp TIG MMA CUT Stick Arc Welder Cutter 110V 220V $439.95 (0 Bids) Time Left: 9h 55m
	3-IN-1 50A Plasma Cutter 200 Amp TIG MMA CUT Stick Arc Welder Cutter 110V 220V $439.95 $483.95 Time Left: 10h 16m
	SIMADRE 50A 110V 220V PLASMA CUTTER with SG-55 TORCH $299.99 (0 Bids) Time Left: 10h 41m
	3-IN-1 50A Plasma Cutter 200 Amp TIG MMA CUT Stick Arc Welder Cutter 110V 220V $439.95 (0 Bids) Time Left: 11h 1m
	UNT 200A TIG ARC MMA 50A PLASMA CUTTER 520D $449.99 (0 Bids) Time Left: 11h 11m
	New 50 AMP AIR PLASMA CUTTER DC INVERTER 50A CUTTING Dual Voltage 110V 220V 50A $299.95 (0 Bids) Time Left: 11h 39m
	3-IN-1 50A Plasma Cutter 200 Amp TIG MMA CUT Stick Arc Welder Cutter 110V 220V $439.95 $483.95 Time Left: 12h 5m
	3-IN-1 50A Plasma Cutter 200 Amp TIG MMA CUT Stick Arc Welder Cutter 110V 220V $439.95 (0 Bids) Time Left: 13h 23m
	Hypertherm Powermax 65 Plasma Cutter 083270 $2,325.00 Time Left: 13h 25m

Regardless of the size, all plasma cutters function on the same principle and they are constructed primarily around the same design.  Plasma cutters are available in many different sizes.

Plasma cutters function by sending a pressurized gas like nitrogen, argon, or oxygen, through a small channel. In the middle of this channel, you will find a negatively charged electrode. When you apply power to the negative electrode, and you touch the tip of the nozzle to the metal, the connection creates a circuit. A powerful spark is then generated between the electrode and the metal and as the inert gas passes through the channel, the spark heats the gas until it reaches the fourth state of matter. This reaction creates a stream of directed plasma that reduces metal to molten slag. The plasma itself conducts an electrical current. The cycle of creating the arc is continuous as long as power is supplied to the electrode and the plasma stays in contact with the metal that is being cut. In order to ensure this contact you must protect the cut from oxidation and regulate the unpredictable nature of plasma.  The cutter nozzle has a second set of channels and these channels release a constant flow of shielding gas around the cutting area. The pressure of this gas flow effectively controls the radius of the plasma beam