FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy field and can be used for treatment of liquid metals, particularly steel, flux cored electrode with tubular envelope, allowing special properties. Wire contains internal metal protection, enveloping filler, at least one thermal barrier coat, enveloping internal metal protection, herewith at least one thermal barrier coat is implemented of material, pyrolysed at contact to tank of liquid material, and impregnating liquid, allowing latent heat of vaporisation higher than 2 MJ/kg, and in which it is absent oxygen nearby material, pyrolysed at contact to tank of liquid material, herewith pyrolysed material allows before pyrolysis of thermal conductivity, which is in the range from 0.15 up to 4 Wt/m K.
EFFECT: invention provides increasing of wire stability against premature failure at its contact to tank of liquid metal, and also reduction of time for introduction of admixtures into tank of liquid metal for required depth, excluding of oxidation or repeated nitride hardening of tank, slopping of liquid metal, smoke emissions.
18 cl, 21 dwg
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