FIELD: electricity.
SUBSTANCE: negative pole of the DC power supply is connected to a non-consumable electrode, and its positive pole is connected to the product and to two consumable electrodes having different chemical composition. Arc between nonconsumable electrode and product is lighted, and then periodically the product is turned off from the positive pole of the power supply by connecting to it consumable electrodes with indirect arc ignition between each of them and nonconsumable electrode. The duration of the current flow in each of the consumable electrodes and the value of current in the period of burning of indirect arc are regulated. Periodic connection of the positive pole of power source is carried out in the sequence "product - first consumable electrode - product - second consumable electrode - product". Consumable electrodes of different diameters can be used.
EFFECT: method ensures the chemical composition of seam with a specified content of alloying elements.
3 cl, 3 dwg, 2 tbl
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