| 2017 №02 (04) |
DOI of Article 10.15407/sem2017.02.05 |
2017 №02 (06) |
Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2017, #2, 29-34 pages
Alloying of surface layer of mould copper plates by the method of plasma-arc remelting
V.G. Kozhemyakin, V.R. Burnashev, V.A. Shapovalov, T.I. Grishchenko, D.A. Kalashnik, A.V. Veretilnik
E.O. Paton Electric Welding Institute, NASU. 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
In the work the scheme of alloying the surface layer of mould copper plate is suggested and tested with applying a master alloy, the composition of which is changed depending on plate zone, which allows increasing the concentration of alloying elements for the wear resistance increase in the bottom part and near the edges of the mould working surface. Results of physical and chemical investigations on interaction of alloying elements Cr and Zr with copper under conditions of plasma-arc alloying are given. Technological conditions of alloying of copper plates in the plasmaarc installation OB-1957 are presented. Chemical composition and degree of elements assimilation in a surface layer is determined. Dependencies of content of alloying elements in a surface layer on physical and the copper plate mechanical properties were established. For the first time the surface layer of experimental-industrial copper plates of 460x135x70 and 360?135?70 sizes for moulds of machines of continuous casting of billets (MCCB) was alloyed with Cr and Zr elements by using the plasma-arc remelting method. Ref. 6, Table 1, Figures 6.
Keywords: copper plate; mould of MCCB; alloying; surface layer; copper alloys; plasma-arc remelting; dispersion strengthening
References
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