Plasma is a thermally high-heated, electrically conductive gas. That means that neutral atoms dissolve into ions and electrons by adding ionisation energy. This energy can be produced by very high temperatures or strong electric fields. Generally, plasma reacts like a gas with a more...
The orifice in a torch cutting nozzle is designed to constrict the arc to a specific diameter without the arc touching the nozzle. The plasma gas provides a thin boundary layer of cool gas between the arc and the nozzle. If the current level is to high or gas flow is to less the more...