Plasma arc vuam yog cov txheej txheem arc vuam nyob rau hauv coalescence yog tsim los ntawm tshav kub tau los ntawm constricted arc teeb ntawm ib tug tungsten / alloy tungsten electrode thiab cov dej-txias (constricting) nozzle (tsis hloov arc) los yog nruab nrab ntawm ib tug tungsten / alloy tungsten electrode thiab txoj haujlwm (hloov arc). Cov txheej txheem siv ob lub inert gases, ib qho ua rau arc plasma thiab qhov thib ob tiv thaiv arc plasma. Filler hlau tuaj yeem lossis tsis tuaj yeem ntxiv.
