Abstract
Introducing systems capable of profound reduction in a casting and rolling module improves the product quality, on account of the intense working of large continuous-cast slabs over the whole cross section and the production of uniform fine-grain structure of the metal, and also increases the cross section of continuous- cast billet. Analysis of the formation of nonmetallic inclusions and segregation in the axial zone of the thick rolled sheet is followed by analysis of the nonuniform deformation over the slag height in the reduction of large continuous-cast slabs at the 5000 mill at OAO Magnitogorskii Metallurgicheskii Kombinat. The structure of a cyclic-deformation system for preliminary deformation of large continuous-cast slabs is described, and its capabilities are explored. Hammers for preliminary deformation of large continuous-cast slabs are considered. Experimental data are presented for the deformation of continuous-cast steel 45 and 12Kh18N10T steel billet. The structure of the continuous-cast billet is assessed in the course of reduction on the cyclic-deformation system. The basic parameters of the system for preliminary deformation of large continuous- cast slabs are determined. The capabilities of the cyclic-deformation system are outlined in terms of increase in sheet quality. On that basis, the use of the cyclic-deformation system in the continuous-casting line for preliminary reduction of large continuous-cast slabs is recommended: it permits matching of the speed of continuous-casting and cyclic-deformation processes; and ensures 45–90% reduction in a single pass so as to obtain well-worked cast structure over the whole slab cross section. When using the cyclic-deformation system in the continuous-casting line, the continuous-cast slabs are reduced by means of the heat of the cast metal, thereby greatly reducing the energy consumption in billet production. The cyclic-deformation system may be used with thick-sheet and broad-strip mills for preliminary single-pass reduction of the hot slab, with improvement in sheet quality and reduction in the number of passes in the mills.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Lekhov, O.S. and Komratov, Yu.S., Sovmeshchennye protsessy nepreryvnogo lit’ya i deformatsii dlya proizvodstva prokata (Combined Processes of Continuous Casting and Deformation for Rolling Stock Production), Yekaterinburg: Ural. Gos. Tekh. Univ., 2009.
Lekhov, O.S. and Baranov, M.V., Prospects for the introduction of processes of cyclic deformation of blanks, Trudy nauchno-tekhnicheskoi konferentsii “Teoriya i tekhnologiya protsessov plasticheskoi deformatsii” (Proc. Sci.-Tech. Conf. “Theory and Technology of Plastic Deformation Processes”), Moscow: Mosk. Inst. Stali Splavov, 1997, pp. 174–178.
Khoiyas, G. and Khain, O., Design and application of forging and rolling units, Chern. Met., 1980, nos. 25–26, pp. 15–21.
Lekhov, O.S., Baranov, M.V., and Minakov, V.S., Analysis of the stress-strain state of metal in the focus of cyclic deformation in the production of sheet in a continuous casting and deformation plant, Izv. Vyssh. Uchebn. Zaved., Chern. Metall., 2004, no. 2, pp. 25–27.
Kokh, G. and Kopp, R., Progress in the field of deformations with large compression, Chern. Met., 1979, no. 21, pp. 3–11.
Teterin, P.K., Matorin, V.I., and Skornyakov, A.N., Rolling with high compression—a new perspective direction in metal forming, Stal’, 1982, no. 3, pp. 15–21.
Rauer, G., Bertram, K., and Kenitseridr, N., The second slab caster at the Thyssen plant in Benquervert, Chern. Met., 1981, no. 23, pp. 32–43.
Pechke, Yu. and Noimnetts, D., Methods of continuous casting combined with rolling, Chern. Met., 1981, no. 22, pp. 9–13.
Yamada, K., Vatanave, T., Abe, K., and Funkda, T., Continuous casting of small pieces, Chern. Met., 1981, no. 10, pp. 18–23.
Bogatov, A.A., Nukhov, D.Sh., and P’yankov, K.P., Finite-element modeling of plate-rolling, Metallurgist, 2015, vol. 59, no. 1, pp. 113–118.
Salganik, V.M., Shmakov, D.O., and Pustovoitov, S.A., Features of formation of the stressed-deformed state of the mill products in roughing passages with reference to mill 5000 of JSC “MMK”, Proizvod. Prokata, 2009, no. 11, pp. 10–14.
Efron, L.I., Metallovedenie v “bol’shoi” metallurgii. Trubnye stali (Metallurgy in “Large” Metallurgy. Pipe Steel), Moscow: Metallurgizdat, 2012.
Pogorzhel’skii, V.I., Kontroliruemaya prokatka nepreryvnolitogo metalla (Controlled Rolling of Continuously Casted Metal), Moscow: Metallurgiya, 1986.
Erenberg, Kh.-Yu., Casting and rolling from the casting of thin slabs at the factory of “Mannesman Rhenen- Verke AG” Company, Metall. Proizvod. Tekhnol. Metall. Protsess., 1990, no. 1, pp. 46–56.
Eberle, A., Vollner, G., Gabel, D., et al., Continuous casting and rolling of thin slabs, Stal’ Zhelezo, 1990, no. 1, pp. 81–88.
Vyunnenberg, K., Production of continuously cast billets meeting the highest quality requirements, Trudy shestogo mezhdunarodnogo kongressa zheleza i stali (Proc. Sixth Int. Congress on Iron and Steel), Moscow: Mashinostroenie, 1990, vol. 3, pp. 364–376.
Lekhov, O.S., Guzanov, B.N., Lisin, I.V., and Bilalov, D.Kh., The combined process of continuous casting and cyclic deformation for production of steel sheets, Stal’, 2016, no. 1, pp. 59–62.
Shkatov, V.V. and Bogomolov, I.V., Transformation of grain structure of austenite in cycle “deformation-primary recrystallization,” Fiz. Met. Metalloved., 1996, vol. 81, no. 2, pp. 149–158.
Khlestov, V.M. and Frolova, Z.V., Effect of parameters of controlled rolling on austenitic and final structure of steel 09G2FB, Izv. Vyssh. Uchebn. Zaved., Chern. Metall., 1989, no. 4, pp. 68–71.
Vyunnenberg, K. and Yakobi, Kh., Internal structure of continuously cast blanks, Chern. Met., 1981, no. 14, pp. 30–39.
Dorozhko, G.K., Khlestov, V.M., and Sokolov, K.N., Effect of deformation on the kinetics of the transformation of austenite and the structure and properties of steel 10KhSND, Met. Sci. Heat Treat., 1977, vol. 19, no. 12, pp. 1029–1032.
Lekhov, O.S., Optimizatsiya mashin dlya deformatsii nepreryvnolitykh zagotovok (Optimization of Machines for Deformation of Continuously Casted Billets), Yekaterinburg: Nauka, 1995.
Spittel, T. and Hensel, A., Rationeller Energieeinsatz bei Umformprozessen, Leipzig: Deutsch. Verlag Grundstoffind., 1983.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © O.S. Lekhov, A.V. Mikhalev, D.Kh. Bilalov, M.M. Shevelev, 2017, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Chernaya Metallurgiya, 2017, No. 4, pp. 257–261.
About this article
Cite this article
Lekhov, O.S., Mikhalev, A.V., Bilalov, D.K. et al. Cyclic-deformation system for the reduction of continuous-cast slabs. Steel Transl. 47, 225–228 (2017). https://doi.org/10.3103/S0967091217040064
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S0967091217040064