Abstract
The edge deformation of cold-rolled electrical-steel sheet in finishing is studied, as well as the change in flatness of the sheet in rolling and heat treatment. The influence of these processes on the edge deformation is determined. The edge deformation is largely due to thermal deformation occurring when coils of strip are heated in cupola furnaces. Quantitative analysis indicates that the thermal deformation is due to the temperature gradients in the coils. Cold-rolling conditions that minimize edge deformation are proposed and tested.
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Garber, E.A., Pavlov, S.I., Kuznetsov, V.V., et al., Influence of unstable technological factors of rolling on the flatness of cold-rolled strips, Proizvod. Prokata, 2008, no. 11, pp. 2–13.
Maksimov, E.A., Experimental analysis of the kinematic criterion of flatness and the conditions for the formation of defects in the shape of cold rolled strips, Izv. Vyssh. Uchebn. Zaved., Tsvetn. Metall., 2011, no. 2, pp. 39–43.
Shestakov, A.V., Traino, A.I., Makushin, A.D., et al., Improvement of rolling modes for soft magnetic strips using mathematical models, Proizvod. Prokata, 2011, no. 7, pp. 18–22.
Loginov, Yu.N. and Puzanov, M.P., Influence of the shape of the neutral section in the deformation center on the estimated pressure during cold rolling, Stal’, 2016, no. 11, pp. 36–40.
Nikitina, N.V., Babkin, A.G., Khar’kov, V.K., et al., The efficiency of counter-flexion of working rolls in a quarto 1700 tempering mill, Proizvod. Prokata, 2010, no. 5, pp. 20–23.
Poletskov, P.P., Dynamics of the parameters of the profile and flatness of sheet metal during smelting by stretching with bending, Vestn. Magnitogorsk. Gos. Tekh. Univ. im. G.I. Nosova, 2011, no. 3, pp. 60–62.
Solovei, V.D., Loginov, Yu.N., and Puzanov, M.P., Evaluating the flow stress of electrical steel under cold rolling in terms of the strain-rate hardening effect, AIP Conf. Proc., 2016, vol. 1785, pp. 040075-1–040075-4.
Bozhkov, A.I., Gubarev, V.Ya., and Degtev, S.S., Improvement of the flatness of the strips of electrotechnical isotropic steels. Part 1. Analysis of temperature fields during continuous annealing, Proizvod. Prokata, 2013, no. 6, pp. 11–19.
Karenina, L.S. and Puzhevich, R.B., Inspection of the residual curvature in an anisotropic electrical steel strip reasons for its formation, Russ. J. Nondestructive Test., 2010, vol. 46, no. 3, pp. 222–225.
Denisov, P.I., Nekit, V.A., Chernov, N.K., and Khoznikov, V.S., Transformation of non-flatness of rolling bimetallic materials at the finishing stage of production, Elektron. Tekhn., Ser. 8: Uprav. Kach. Standart., 1981, no. 5, pp. 3–4.
Bel’skii, S.M., Mazur, I.P., Dozhdikov, V.I., and Vasil’ev, V.B., Control of flatness of rolled strips based on mathematical model of distribution of longitudinal stresses, Vestn. Tambov. Univ., Estestv. Tekh. Nauki, 2013, vol. 18, no. 1, pp. 17–22.
Förster, E. and Rönz, B., Methoden der Korrelationsund Regressionsanalyse, Berlin: Die Wirtschaft, 1979.
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Original Russian Text © Yu.N. Loginov, M.P. Puzanov, A.G. Uritskii, 2017, published in Stal’, 2017, No. 4, pp. 29–34.
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Loginov, Y.N., Puzanov, M.P. & Uritskii, A.G. Reducing the edge deformation of thin electrical steel sheet. Steel Transl. 47, 267–273 (2017). https://doi.org/10.3103/S0967091217040076
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DOI: https://doi.org/10.3103/S0967091217040076