Plasma arc welding

Plasma Arc Welding (PAW) is a welding process that utilizes a plasma arc to join metal pieces together. Plasma is a state of matter similar to gas, but with distinct properties due to the presence of ionized particles. In PAW, a high-velocity jet of ionized gas (plasma) is created by passing a gas, typically argon or a mixture of gases, through a constricting nozzle and applying an electrical arc.