Method of plasma multiarc welding by permanently burning direct-

Details Method of plasma multiarc welding by permanently burning direct- Method of plasma multiarc welding by permanently burning direct-

1977-02-08

1978-10-10

Truhe, J. V.

Electric heating

Metal heating

By arc

219 75, 219123, 2191241, B23K 908

Patent

active

041198280

ABSTRACT:
A method of plasma multiarc welding by permanently burning direct-current arcs of different polarities makes use of a plasma forming gas and shielding mediums and the arcs are located so that the adjacent arcs have opposite polarities, consisting, according to the invention, in that all arcs are started between nonconsumable electrodes and a workpiece or some arcs are started between nonconsumable electrodes and a workpiece and other arcs are started between consumable electrodes and a workpiece, the currents of all arcs and the distance between the arcs being set so that the ratio of the product of the currents of two adjacent arcs to the distance therebetween is equal or more than 6.10.sup.3 A.sup.2 /cm.

REFERENCES:
patent: 3050616 (1962-08-01), Gage
patent: 3278720 (1966-10-01), Dixon
patent: 3641309 (1972-02-01), Klebel
patent: 3660630 (1972-05-01), Sunnen et al.
"Methods of Controlling Arc Blow," by Holt, The Welding Engineer, 4-1931.

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