The Paton Welding Journal, 2023, №04



2023 №04 (06)

DOI of Article 10.37434/tpwj2023.04.07

2023 №04 (01)

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The Paton Welding Journal, 2023, #4, 54-59 pages

Technical-economic indices of operation of AC steel-making furnace with application of cored electrodes

A.G. Bogachenko¹, L.A. Sidorenko¹, I.О. Goncharov¹, I.A. Neylo¹, S.G. Kiyko², I.N. Logozinskyi², B.A. Levin², K.N. Gorban²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²PJSC Dneprospetsstal 81 Pivdenne Shose, 69000, Zaporizhzhia, Ukraine

Abstract
For the first time in the world practice, several series of experimental melts (more than 60) were performed, during which graphitized composite (cored) electrodes of EGC (C) type were used, designed by the E.O. Paton Electric Welding Institute. It is shown that a “cored” arc is fundamentally different in geometrical and power parameters from the arc of a monolithic electrode. A “cored” arc is dispersed, spatially stable and has a high stability in a wide range of lengths and electrical modes. This is especially important during the formation of wells and charge melting. A cored electrode (depending on the composition) provides a 2‒5 times decrease in time from the first short circuit to a stable arc burning as compared to a monolithic electrode; 2‒4 times reduction in harmonic factor; 6‒16 % saving of electric power; 12‒23 % growth of furnace output, etc. Cored electrodes improve almost all technical and economic indices of the furnace operation, providing the ability to control high-current arcs and their high stability.
Keywords: electric arc, short circuit, saving of electric power

Received: 03.03.2023
Accepted: 25.05.2023

References

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