2020 №03 (01) DOI of Article
2020 №03 (03)

Electrometallurgy Today 2020 #03
SEM, 2020, #3, 18-23 pages

Metal carbonization with different methods of ESR of non-compacted steel chips

Yu.M. Kuskov, O.G. Kuzmenko
E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Investigations of metal carbonization at remelting of chips of four types of steels (high-speed, stamping, hightemperature, structural) and a high-temperature alloy were performed. It was found that carbonization of electroslag metal depends both on chemical composition of steel (alloy), and on technological features of melting. The latter include remelting technique, method and degree of chips cleaning, composition of the used fluxes and temperature conditions of chips melting in the slag. In most of the cases, carbonization is determined chiefly by presence of LCL remains in the chips. It is shown that application of current-conducting electrode-mould is recommended for chips remelting, which allows simplifying the remelting process after achievement of maximum carbonization of the metal. Ref. 15, Tabl. 7.
Keywords: chips; electroslag remelting; consumable and nonconsumable electrodes; slag; cleaning; carbonization

Received 07.07.2020


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