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The results of the study of the effect of isothermal holding of the indefenitious cast iron used for the manufacture of the working layer of two-layer mill rolls are given in the article. It is shown that isothermal exposure at high temperatures, which occurs during the manufacture of the mill roll during the pouring of the core metal, affects the abrasive wear resistance of the alloy. The effect of the final heat treatment, tempering, on the change in the value of the abrasive wear resistance coefficient of the alloys under study was also studied. As the object of study, half-chromium-nickel iron, additionally alloyed with vanadium, including nitrated, in a concentration of up to 0.5% was chosen.


Roll, working layer, graphitization, tempering, abrasive wear resistance.

Vdovin Konstantin Nikolayevich - Doctor of Technical Sciences, Professor, Nosov Magnitogorsk State Technical University;

Gorlenko Dmitry Aleksandrovich - Ph.D., Art. teacher, Nosov Magnitogorsk State Technical University;

Nikitenko Olga Aleksandrovna - Ph.D., Research Engineer, Nosov Magnitogorsk State Technical University ;

Feoktistov Nikolay Aleksandrovich - candidate of technical sciences, head of Foundry Processes and Material Science Department, Nosov Magnitogorsk State Technical University