So a further supply of argon is fed to the outer shielding nozzle to protect the weld.Ī high-frequency unit, fed from a separate source from the mains supply, initiates the pilot arc. Gas is fed into the nozzle, and, when an arc is struck between the tungsten electrode and the nozzle, the gas is ionised in its passage through the arc.īoth work and nozzle are connected to the anode, the tungsten electrode to the cathode of a D.C.
Cut 40 Plasma Cutter Circuit Diagram Manual TIG Processīut a Plasma Jet can be produced by placing a Tungsten electrode centrally within a water-cooled constricted copper nozzle.
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