A gas directed into the torch to surround the electrode, which becomes ionized by the arc to form a plasma and issues from the torch nozzle as the plasma jet. (Also referred to as orifice gas or cutting gas).
Welding Tech
An arc welding process that uses a constricted arc between a non-consumable electrode and the weld pool (transferred arc) or between the electrode and the constricting nozzle (non-transferred arc). Shielding is obtained from the ionized gas issuing from the torch.
Gouging utilizing a plasma arc for metal removal. An electric arc contained inside a gas shield is passed through a constricting orifice in order to generate extremely high temperatures and a high velocity stream of ionized gas. This stream Rapidly melts the metal on which it is focused and then blows the molten material away.
An arc cutting process that uses a constricted arc and removes the molten metal in a high velocity jet of ionized gas issuing from the constricting orifice. Plasma arc cutting is a direct current electrode negative (DCEN) process.
A gas that has been heated by an arc to at least a partially ionized condition, enabling it to conduct an electric current.