The Paton Welding Journal, 2025, №12

2025 №12 (05)

DOI of Article 10.37434/tpwj2025.12.06

2025 №12 (07)

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The Paton Welding Journal, 2025, #12, 41-48 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 NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: y.kostetsky@paton.kiev.ua

Abstract
The results of experiments on recycling nickel alloys by electroslag remelting (ESR) using a current-conducting mold are presented. The studies were carried out on the R-951 unit, where rational remelting parameters for consumable electrodes of variable cross-section made from nickel alloy waste were determined. The results confirmed the effectiveness of recycling production waste of EP648 nickel alloy by electroslag remelting with the use of a current-conducting mold. Optimal remelting modes for consumable electrodes of variable cross-section were established, ensuring process stability through rational power distribution between the electrode and the mold. The chemical composition of the obtained ingots met the standard requirements for EP648 alloy, and the products manufactured from them successfully passed quality control. The developed single-stage recycling technology enables direct return of nickel alloy waste into the production cycle and has high practical potential for industrial application. The research results may be used to improve existing methods of metal waste recycling and to develop new approaches to processing nickel alloys.
Keywords: recycling, nickel alloy, electroslag remelting, two-circuit technology, current-conducting mold, ingot

Received: 15.09.2025
Received in revised form: 14.10.2025
Accepted: 18.12.2025

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Suggested Citation

Yu.V. Kostetskyi, V.P. Petrenko, E.O. Pedchenko, G.O. Polishko, V.A. Zaitsev (2025) Recycling of nickel alloys by electroslag remelting. The Paton Welding J., 12, 41-48.

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