The Paton Welding Journal, 2026, №01

2026 №01 (03)

DOI of Article 10.37434/tpwj2026.01.04

2026 №01 (05)

---

The Paton Welding Journal, 2026, #1, 27-32 pages

Investigation of the processes of diffusion and their influence on the electrical resistivity of graphitized cored electrodes applied in industrial steelmaking arc furnaces

O.G. Bogachenko¹, D.D. Mishchenko¹, I.O. Goncharov¹, I.O. Neilo¹, S.G. Kiiko², I.M. Logozinskyi², K.M. Gorban², A.G. Fedkov²

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: goncharovia@ukr.net
²PJSC “Electrometallurgical Plant “Dniprospetsstal” 81 Pivdenne Highway, 69008, Zaporizhzhzya, Ukraine

Abstract
It is noted that during application of composite (cored) electrodes in industrial steelmaking arc furnaces, diffusion processes occur in the core-electrode system, which determine the properties of the graphitized cored electrode and of the core itself, as well as the electric arc parameters. The diffusion processes and their influence on the electrical resistivity of the body of the graphitized cored RP electrode with the initial diameter of 350 mm, which has passed the full cycle of heating in EAF DC-12 furnace with subsequent cooling to ambient temperature and holding for 1.2·105 h, were investigated. It was found that active diffusion of all the main components of the core (K, Ba, Cu, Cr and Ti) into the electrode body occurs in the core-electrode system. The higher the content of copper, barium, titanium and other core components in the specimen, the lower its electrical resistivity, and vice versa. Diffusion of the core components in the core-electrode system results in a 35‒40 % lower electrical resistivity of the cored electrode than that of the initial monolithic electrode.
Keywords: steelmaking arc furnaces, graphitized cored electrode, diffusion, electrical resistivity

Received: 30.07.2025
Received in revised form: 25.09.2025
Accepted: 19.12.2025

References

1. Bogachenko, A.G., Mishchenko, D.D., Braginets, V.I. et al. (2016) Saving of electric power at the arc steel melting furnaces of direct current with graphitized cored electrodes. Sovremennaya Elektrometallurgiya, 1, 58–64 [in Russian]. DOI: https://doi.org/10.15407/sem2016.01.09
2. Paton, B.E., Bogachenko, O.G., Kyiko, S.G. et al. (2021) Experience of application of graphitized wick electrodes in industrial steel-making ac furnace. Suchasna Elektrometalurhiya, 1, 48–53 [in Ukrainian]. DOI: https://doi.org/10.37434/sem2021.01.06
3. Bogachenko, O.G., Chernyakov, A.V., Goncharov, I.O. et al. (2024) Application of graphitized cored electrodes in 50 ton steel melting ac arc furnace of DSV-50 type. Suchasna Elektrometalurhiya, 1, 32–39 [in Ukrainian]. DOI: https://doi.org/10.37434/sem2024.01.04
4. Bogachenko, O.G., Mishchenko, D.D., Goncharov, I.O. et al. (2024) Composite (cored) graphitized electrodes for industrial DC and AC steel-melting furnaces. Suchasna Elektrometalurhiya, 2, 35–45 [in Ukrainian]. DOI: https://doi.org/10.37434/sem2024.02.06
5. Vodennikov, S.A. (2009) Scientific-technological fundamentals of formation of composite coatings from ion melts for predictable provision of functional properties of porous materials: Syn. of Thesis for Dr. of Techn. Sci. Degree. Zaporizhzhia, ZhNTU [in Ukrainian].
6. Grudnitskiy, O.M., Iskhakov, R.A-R., Korobov, V.K. (2011) Ways of reduction of specific consumption of graphitized electrodes in electric arc furnaces. Litio i Metallurgiya, 1, 100–101 [in Russian].
7. Makhnenko, O.V., Kostenevich, O.S., Saprykina, G.Yu. et al. (2024) Mathematical modeling of the processes of component diffusion in a wick-graphite electrode system in industrial DC arc steel melting furnace of DSP PS-12 type. Suchasna Elektrometalurhiya, 4, 24–28 [in Ukrainian]. DOI: https://doi.org/10.37434/sem2024.04.04
8. Fialkov, A.S. (1997) Carbon. Interlayer compounds and composites on its base. Moscow, Aspekt Press [in Russian].

---

Suggested Citation

O.G. Bogachenko, D.D. Mishchenko, I.O. Goncharov, I.O. Neilo, S.G. Kiiko, I.M. Logozinskyi, K.M. Gorban, A.G. Fedkov (2026) Investigation of the processes of diffusion and their influence on the electrical resistivity of graphitized cored electrodes applied in industrial steelmaking arc furnaces. The Paton Welding J., 01, 27-32.

---