| 2025 №04 (02) |
DOI of Article 10.37434/sem2025.04.03 |
2025 №04 (04) |
"Suchasna Elektrometallurgiya" (Electrometallurgy Today), 2025, #4, 17-25 pages
Recycling of nickel alloys by electroslag remelting
Yu.V. Kostetskyi, V.P. Petrenko, E.O. Pedchenko, G.O. Polishko, V.A. Zaitsev
E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: y.kostetsky@paton.kiev.uaAbstract
The paper presents the results of experiments on recycling of nickel alloys through electroslag remelting (ESR) using a current supplying mould. The research was conducted in the P-951 furnace, where rational modes of remelting electrodes of a variable cross-section from nickel alloy waste were determined. The study confirmed the effectiveness of recycling technological waste of EP648 nickel alloy by electroslag remelting using a current-supplying mould. Optimal modes of remelting variable cross-section consumable electrodes were established to ensure process stability through rational power distribution between the electrode and the current-supplying mould. The chemical composition of the produced ingots met the regulatory requirements for the EP648 alloy, and the products made from these ingots successfully passed quality control. The developed single-stage recycling technology allows nickel alloy waste to be returned directly to the production cycle, demonstrating high practical potential for industrial application. The research results can be used to improve the existing metal waste recycling methods and to develop new approaches to processing nickel alloys waste. 23 Ref., 6 Tabl., 7 Fig.
Keywords: recycling, nickel alloy, electroslag remelting, dual-circuit ESR technology, current-supplying mould, ingot
Received: 15.09.2025
Received in revised form: 14.10.2025
Accepted: 12.11.2025
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