SEM, 2021, #1, 48-53 pages
Experience of application of graphitized wick electrodes in industrial steel-making AC furnace
B.E. Paton1, O.G. Bogachenko1, S.G. Kyiko2, I.M. Logozinskiy2, O.P. Lyutiy2, K.M. Gorban2
E.O. Paton Electric Welding Institute of the NAS of Ukraine.
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
PrJSC «Dniprospetsstal». 81 Pivdenne Rd., 69000, Zaporizhzhya, Ukraine. E-mail:firstname.lastname@example.org
Several series of test melts (more than 60) with application of graphitized composite (wick) electrodes of EGK (G)
type developed at PWI were successfully conducted for the first time in the world in an industrial three-phase AC arc
steel-making furnace of DS-6N1 type at «Dniprospetsstal» plant. It is shown that the wick arc differs in principle by its
geometrical and energy parameters from an arc of regular (monolithic) electrode. The wick arc is dispersed, spatially
steady, it is characterized by a high stability in a broad range of lengths and electric modes. It is particularly important
during formation of wells and charge melting. Wick electrode (depending on its composition) ensures 2...5 shortening
of the time from the first short-circuit to steady burning of the arc, compared to a monolithic electrode, 2…4 times
reduction of the harmonic factor; power saving by 6...10 %; increase of furnace capacity by 12...23 %, etc. The need
and good prospects for continuation of studies of the energy, technological and metallurgical features of operation
of AC arc steel-making furnaces with wick electrodes is emphasized. These electrodes improve practically all the
technical and economic characteristics of furnace operation, while providing the possibility of controlling the highcurrent
arcs and their high stability. Ref. 5, Tabl. 2, Fig. 4.
graphitized composite (wick) electrodes; electric arc, arc steel-making furnaces; short-circuiting; harmonic
factors; power saving; furnace capacity
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3. Fialkov, A.S. (1977) Carbon, interlayer compounds and composite
on its base. Moscow, Aspekt press [in Russian].
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furnace installation. In: Physical processes in welding
and metal working: Collect. of articles and reports. Kiev,
135–140 [in Russian].
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