Electric heating – Metal heating – By arc
Patent
1980-09-02
1982-03-23
Rubinson, Gene Z.
Electric heating
Metal heating
By arc
219121PP, 219121PQ, 219 7616, 219121PL, B23K 916
Patent
active
043214541
ABSTRACT:
Plasma-MIG welding in which a thermally ionizable gas stream is flowed through a nozzle non-consumable electrode having a central orifice and a surrounding annular opening 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 then spontaneously established by means of the MIG-arc between the nozzle non-consumable electrode and the workpiece. The central plasma gas column is accelerated by constriction of the annular gas shield downstream of the nozzle non-consumable electrode.
REFERENCES:
patent: 3242305 (1966-03-01), Kane et al.
patent: 3366772 (1968-01-01), Wickham et al.
patent: 3969603 (1976-07-01), Boughton et al.
patent: 4016397 (1977-04-01), Essers et al.
patent: 4101751 (1978-07-01), Urbanic et al.
patent: 4234778 (1980-11-01), Willems et al.
Tichelaar Gerrit W.
Willems Gerardus A. M.
Briody Thomas A.
Paschall Mark H.
Rubinson Gene Z.
Schneider Rolf E.
Streeter William J.
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