Method of and device for plasma-MIG welding

Details Method of and device for plasma-MIG welding Method of and device for plasma-MIG welding

1977-12-19

1980-11-18

Reynolds, B. A.

Electric heating

Metal heating

By arc

219 74, 219 7616, B23K 900

Patent

active

042347793

ABSTRACT:
Plasma-MIG welding in which a thermally ionizable inert gas stream is flowed through a nozzle non-consumable electrode having a central aperture and a surrounding annular aperture toward a workpiece and is thereby split into a central gas column enveloped by an annular gas shield. A consumable electrode is fed through the central gas column toward the workpiece, with the establishment of a MIG-arc therebetween. A plasma arc is spontaneously established by means of the MIG-arc between the nozzle non-consumable electrode and the workpiece.

REFERENCES:
patent: 3270179 (1966-08-01), Russell
patent: 3794806 (1974-02-01), Klasson
patent: 3832513 (1974-08-01), Klasson
"Plasma Mig Welding", Welding and Metal Fabrication, Dec. 1974, pp. 417-419, Essers et al.

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