FIELD: technological processes.
SUBSTANCE: invention relates to welding equipment, namely to a method of arc welding of metal products alloys with special properties, and can be used for making joints with grooving. For welding poles of one direct current source are connected to electrodes. Negative pole of the second direct current source is connected to the product, and positive - to one of the electrodes. Electrode feed rate is selected corresponding to speeds of their melting. Negative electrode feed rate is selected equal to the speed of its melting in arc of forward polarity. Positive electrode feed rate is selected equal to the speed of its melting in arc of reverse polarity. Method increases efficiency of electrode metal melting and in vary in wide range share of main metal in weld metal and its chemical composition.
EFFECT: higher reliability and stability of arc burning, possibility of independent control of melting of main and electrode metals.
4 cl, 5 dwg, 3 ex
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