Electrometallurgy Today, 2023, №03



2023 №03 (01)

DOI of Article 10.37434/sem2023.03.02

2023 №03 (03)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2023, #3, 9-12 pages

Producing steel-copper hearth-level electrode for DC arc furnaces

F.K. Biktagirov, V.O. Shapovalov, O.V. Hnatushenko, A.P. Ignatov, V.V. Barabash, T.I. Hrishchenko

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Abstract
Technology of electroslag surfacing of steel with copper for products of a large cross- section and copper thickness was developed. Surfacing is performed with electroslag preheating of the steel billet surface to a temperature higher than copper melting temperature, but lower than that of steel melting. Then the steel-copper transition layer is formed by feeding copper into the slag pool in the liquid state or in the form of solid discrete filler. This is followed by deposition of a copper layer of the required thickness. Slags with different melting temperature were developed for each surfacing stage. It is shown that electroslag surfacing ensures a strong bonding with minimal penetration of iron into copper. Bimetal steel-copper billets of rod-type hearth-level electrodes with the copper part of 320 mm diameter and 450 mm height were produced for 12 ton DC ASF. 9 Ref., 7 Fig.
Keywords: bimetal, steel-copper, electroslag surfacing, transition layer, quality, hearth-level electrode

Received 10.08.2023

References

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