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Published in: Metallurgist 7-8/2015

01-11-2015

Increasing the Service Life of Large Rolling-Mill Rolls by Using the Reserve Hardenability of the Steel

Author: Yu. A. Samoilovich

Published in: Metallurgist | Issue 7-8/2015

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Abstract

Roll steel with a high chromium content (steel 45Kh5MF) is characterized by good hardenability, which provides an opportunity to significantly increase the durability of rolling-mill rolls. Here, the surface layer (working layer) of the rolls is strengthened thanks to the use of a heat treatment that forms a structure of lower bainite while blocking the pearlite transformation of austenite. At the same time, occurrence of the bainite transformation in high-chromium steel requires that the steel be kept in the narrow temperature range associated with this conversion (290–410°C) for a considerable length of time. Large rolls made of steel 45Kh5MF are quenched on a horizontal unit in two stages: intensive water-air cooling for 30–35 min (stage 1); cooling with compressed air for 4–5 h (Stage 2). Such quenching blocks the conversion of austenite to pearlite and ensures the formation of a satisfactorily developed bainitic structure. Efficient regimes for quenching and tempering large rolling-mill rolls were found by using integrated software that makes it possible to track the dynamics of the formation of temporary and residual stresses in rolls.

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Literature
1.
go back to reference N. P. Anufriev, S. V. Kamantsev, and M. V. Maisuradze, “Aspects of microstructure formation in steel 45Kh5MF during the production of rolls for hot rolling,” Stal, No. 10, 61–65 (2011). N. P. Anufriev, S. V. Kamantsev, and M. V. Maisuradze, “Aspects of microstructure formation in steel 45Kh5MF during the production of rolls for hot rolling,” Stal, No. 10, 61–65 (2011).
2.
go back to reference N. P. Anufriev, S. V. Kamantsev, and M. V. Maisuradze, “Study of phase transformations and structural transformations in steel 45Kh5MF during continuous cooling,” Izv. Vyssh. Uchebn. Zaved. Chern. Metall., No. 6, 54–55 (2011). N. P. Anufriev, S. V. Kamantsev, and M. V. Maisuradze, “Study of phase transformations and structural transformations in steel 45Kh5MF during continuous cooling,” Izv. Vyssh. Uchebn. Zaved. Chern. Metall., No. 6, 54–55 (2011).
3.
go back to reference R. I. Entin, Austenite Transformations in Steel, Metallurgizdat, Moscow (1960). R. I. Entin, Austenite Transformations in Steel, Metallurgizdat, Moscow (1960).
4.
go back to reference I. A. Borisov, L. F. Goland, and I. G. Zhigalkin, “Technology for water-air cooling in the heat treatment of large parts,” MiTOM, No. 12, 2–6 (1996). I. A. Borisov, L. F. Goland, and I. G. Zhigalkin, “Technology for water-air cooling in the heat treatment of large parts,” MiTOM, No. 12, 2–6 (1996).
5.
go back to reference A. N. Minkov, “Quenching of large parts with a controlled cooling rate,” Metallurg. Gornorud. Prom., No. 3, 88–91 (2013). A. N. Minkov, “Quenching of large parts with a controlled cooling rate,” Metallurg. Gornorud. Prom., No. 3, 88–91 (2013).
6.
go back to reference N. I. Vorob’ev, V. I. Antonov, V. B. Zakharov, et al., “Aspects of the cooling of quenched and tempered large forgings,” Stal, No. 3, 62–63 (2003). N. I. Vorob’ev, V. I. Antonov, V. B. Zakharov, et al., “Aspects of the cooling of quenched and tempered large forgings,” Stal, No. 3, 62–63 (2003).
7.
go back to reference I. Yu. Pyshmintsev, Yu. G. Eismondt, Yu. V. Yudin, et al., “Quenching of large forgings in a water–air mixture,” MiTOM, No. 3, 24–28 (2003). I. Yu. Pyshmintsev, Yu. G. Eismondt, Yu. V. Yudin, et al., “Quenching of large forgings in a water–air mixture,” MiTOM, No. 3, 24–28 (2003).
8.
go back to reference B. Boley and J. Weiner, Theory of Thermal Stresses [Russian translation], Mir, Moscow (1964). B. Boley and J. Weiner, Theory of Thermal Stresses [Russian translation], Mir, Moscow (1964).
9.
go back to reference Ya. S. Podstrigach and Yu. M. Kolyano, General Thermomechanics, Naukova Dumka, Kiev (1976). Ya. S. Podstrigach and Yu. M. Kolyano, General Thermomechanics, Naukova Dumka, Kiev (1976).
10.
go back to reference Yu. A. Samoilovich and R. G. Ushakova, “Thermal stresses in a steel ingot cooling in the ingot mold,” Thermophysics and Heat Exchange: Coll. Works of VNIIMT, Sverdlovsk (1969), No. 19, pp. 199–211. Yu. A. Samoilovich and R. G. Ushakova, “Thermal stresses in a steel ingot cooling in the ingot mold,” Thermophysics and Heat Exchange: Coll. Works of VNIIMT, Sverdlovsk (1969), No. 19, pp. 199–211.
11.
go back to reference Yu. A. Samoilovich and Z. K. Kabakov, “Accounting for the effect of relaxation in determining the thermal stresses in a casting solidifying within a certain temperature range,” Combustion. Heat Exchange. Heating of Metal: Coll. Works of VNIIMT, Metallurgiya, Moscow (1973), No. 24, pp. 100–113. Yu. A. Samoilovich and Z. K. Kabakov, “Accounting for the effect of relaxation in determining the thermal stresses in a casting solidifying within a certain temperature range,” Combustion. Heat Exchange. Heating of Metal: Coll. Works of VNIIMT, Metallurgiya, Moscow (1973), No. 24, pp. 100–113.
12.
go back to reference Yu. A. Samoilovich and Yu. A. Malevich, “Calculation of the thermal stresses in the solid skin of an ingot,” Izv. Vyssh. Uchebn. Zaved. Energetika, 74–78 (1988). Yu. A. Samoilovich and Yu. A. Malevich, “Calculation of the thermal stresses in the solid skin of an ingot,” Izv. Vyssh. Uchebn. Zaved. Energetika, 74–78 (1988).
13.
go back to reference Yu. A. Samoilovich, The Microcomputer in the Solution of Problems on the Crystallization of Ingots, Metallurgiya, Moscow (1988). Yu. A. Samoilovich, The Microcomputer in the Solution of Problems on the Crystallization of Ingots, Metallurgiya, Moscow (1988).
14.
go back to reference Yu. A. Samoilovich, “Analysis of the thermal stress state of rails during bulk quenching,” Metallurg, No. 11, 65–72 (2011). Yu. A. Samoilovich, “Analysis of the thermal stress state of rails during bulk quenching,” Metallurg, No. 11, 65–72 (2011).
15.
go back to reference Yu. A. Samoilovich, “Improving the strength of railroad rails by isothermal quenching to lower bainite,” Stal, No. 4, 66–69 (2013). Yu. A. Samoilovich, “Improving the strength of railroad rails by isothermal quenching to lower bainite,” Stal, No. 4, 66–69 (2013).
16.
go back to reference E. I. Treiger and V. P. Prikhod’ko, Improving the Quality and Operational Reliability of Strip-Mill Rolls, Metallurgiya, Moscow (1988). E. I. Treiger and V. P. Prikhod’ko, Improving the Quality and Operational Reliability of Strip-Mill Rolls, Metallurgiya, Moscow (1988).
17.
go back to reference N. A. Kuklo, “Mechanism of the occurrence of delamination on the surface of rolls for cold rolling,” Stal, No. 6, 544–547 (1964). N. A. Kuklo, “Mechanism of the occurrence of delamination on the surface of rolls for cold rolling,” Stal, No. 6, 544–547 (1964).
18.
go back to reference V. P. Polukhin, V. A. Nikolaev, P. T. Shul’man, et al., Reliability and Durability of Rolls for Cold Rolling, Metallurgiya, Moscow (1971). V. P. Polukhin, V. A. Nikolaev, P. T. Shul’man, et al., Reliability and Durability of Rolls for Cold Rolling, Metallurgiya, Moscow (1971).
19.
go back to reference B. A. Brusilovskii and A. Ya. Shashko, “Mechanism of the occurrence of delamination on the surface of rolls for cold rolling,” Probl. Prochn., No. 2, 116–122 (2001). B. A. Brusilovskii and A. Ya. Shashko, “Mechanism of the occurrence of delamination on the surface of rolls for cold rolling,” Probl. Prochn., No. 2, 116–122 (2001).
Metadata
Title
Increasing the Service Life of Large Rolling-Mill Rolls by Using the Reserve Hardenability of the Steel
Author
Yu. A. Samoilovich
Publication date
01-11-2015
Publisher
Springer US
Published in
Metallurgist / Issue 7-8/2015
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-015-0146-x

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