Vsesojuzny Nauchno-issledovatelsky Proektno-konstruktorsky I

Gennady Egorovich Strepetov

David Grigorievich Bykhovsky

Alexandr Ivanovich Danilov

Arkady Leonidovich Bolotnikov

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.

Growing community of inventors

Saint-Petersburg, Russia

Gennady Egorovich Strepetov