Nosov Magnitogorsk State Technical University (Magnitogorsk, Russia):

K. N. Vdovin, Dr. Eng., Prof., Dept. of Foundry Production and Material Processing, E-mail: kn.vdovin@gmail.com
D. A. Gorlenko, Cand. Eng., Senior Lecturer of Dept. of Foundry Production and Material, E-mail: gorldima@yandex.ru
N. A. Feoktistov, Cand. Eng., Associate Prof., Head of Dept. of Foundry Production and Material, E-mail: fna87@mail.ru

Magnitogorsk Plant of Rolling Rolls (Magnitogorsk, Russia):

D. V. Kuryaev, Director

The paper presents the effect of isothermal annealing at the temperatures higher than the temperature of carbide phase graphitization in indefinite cast iron on quantitative and qualitative parameters of graphite inclusions, depending on vanadium content and nitrogen presence in the alloy. This material is used for manufacture of the working layer of a dual-layered rolling roll. Absolute and relative variations of amount and average size of graphite inclusions are determined depending on the degree of alloy alloying in as-cast and heat treated states. Regularities of variation of graphite phase morphology depending on the degree of alloy alloying and presence of high-temperature heat treatment are examined.

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