How does a Plasma torch work?

How does a Plasma torch work?

How does a plasma cutting torch work?

Plasma cutting torches use a copper nozzle to constrict the steam of plasma, which is then subjected to the workpiece. As the current from the cutting torch passes through the plasma, sufficient heat is produced to melt through the workpiece. At the same time, compressed gases blow away the molten metal.

How are plasma torches powered?

A thermal plasma torch is generally powered by a DC power supply from few tens of kW up to several MW. A gas is pushed through the torch and transits inside it, where an electric arc is generated by a DC power supply to reach a temperature range of 5.000 to 10.000°C at the exhaust.

Does a plasma torch need gas?

Do you need gas for a Plasma Cutter? Gas is needed for a plasma cutter in order for it to work and create the plasma. As mentioned, the most popular gases to use are oxygen, nitrogen or argon. Some plasma cutter systems include multi-gas features so a variety of gases can be used for different applications.

How does a plasma cutter operate?

Plasma cutters work by sending a pressurized gas, such as nitrogen, argon, or oxygen, through a small channel. In the center of this channel, you’ll 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.

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What is a disadvantage of plasma cutting?

Unfortunately, plasma cutting does have a few drawbacks. Most plasma cutters aren’t useful for thicker or denser metals. The fleeting nature of plasma limits their range to a depth of about one inch.

Is a plasma cutter better than a torch?

Plasma does not require the metal to be preheated before cutting, which saves time, and plasma cutters also outperform oxy-fuel torches when cutting stacked metals. Faster speeds can be achieved on thinner metals with plasma, with minimal or no metal distortion.

What kind of gas do you use for a plasma cutter?

Nitrogen. Nitrogen is often chosen as the plasma cutter gas for higher current systems and cutting materials up to 3″ thick. It produces quality cuts on most materials, including stainless and mild steel and aluminum. For thicker metals, however, it’s better to use nitrogen with air as a secondary gas.

How many volts does a plasma cutter produce?

A basic plasma cutter or plasma cutting system includes the following components: Power supply – A constant current DC power source. The open circuit voltage is typically in the range of 240 to 400 VDC.

Do all plasma cutters need air compressor?

First, the arc heats the metal until it’s semi-gaseous. Second, the plasma is forced by blasts of air to finish the cut. Therefore, all plasma cutters need an air compressor to generate enough air pressure for the task. If you buy a plasma cutter without a built-in source of air, you’ll need a separate air compressor.

Can you use a plasma cutter to heat metal?

No. Plasma cutters use a jet of air along with the arc to cut they pretty thoroughly oxidise the metal, plus the jet would just spray molten metal everywhere if you tried to contain it.