Plasma cutting works by passing a very swift jet of hot plasma through conductive metals to cut through it.
There are 5 key to any Plasma Cutting System
The power supply – this will convert either single or three-phase AC line voltage into a useful DC voltage of up to 400 VDC. This ensures that the plasma arc stays stable throughout the arc cutting process.
Arc Starting Console
The Arc Starting Console – this is a simple circuit that is designed to deliver an AC voltage of around 5,000 VAC at 2MHZ (which is very high-frequency) to produce the spark that launches the plasma arc
Gas flow is critical and plasma systems can use nearly any gas. Typically, nitrogen, oxygen and argon are used. These can serve two purposes:
- to form the base of the plasma arc
- to shield the plasma, to provide a better cutting experience
Plasma Cutters heat up quickly and get incredibly hot. If they didn’t have a cooling system the nozzle or electrode could catch fire, thus a liquid cooling system is built in and is used to keep the temperature under control at all times.
The Plasma Torch is designed to enable the proper alignment of the plasma arc and to ensure that the cooling system operates effectively. Consumables for a plasma cutter include nozzles, electrodes, and swirl rings.