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HomeSolid State PhenomenaSolid State Phenomena Vol. 265Simulation of Power Efficient Cooling Technology...

Simulation of Power Efficient Cooling Technology for Continuously Cast Bars

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Abstract:

The article describes a power efficient technology, allowing to preserve and maintain the heat content in a continuously cast bar at the production line “Continuous Casting Machine – Rolling Mill”. It considers a possibility of obtaining the maximum heat content in the continuously cast bar by means of rational cooling schedules in the secondary cooling zone. In order to maintain the achieved heat content in the bar, it is proposed to utilize heat insulation of the bar in the air cooling zone prior to its cutting-to-length. The article describes the design of the heat insulating shell in the CCM process scheme and the materials to be used for it. To analyze the interaction of heat flows between the bar and the shell in the heat insulation zone, the author has made a thermal balance of this zone. A mathematical model of the concast bar cooling with due consideration of the heat insulation zone and its implementation by means of numerical methods is described here. The application of numerical simulation has allowed to predict rational cooling schedules for the continuously cast bar and to determine the heat content of the bar at the exit from the continuous casting machine with respect to the heat insulation. According to the results of the simulation, there have been plotted the charts of temperature distribution along the CCM length, comparing the air cooling of the bar and its thermal conditioning in the heat insulation zone. These results confirm the effectiveness of utilizing heat insulation for maintaining the maximum heat content of the bar, which makes it possible to reduce the power costs for its heating prior to the rolling.

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Materials Engineering and Technologies for Production and Processing III

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Periodical:

Solid State Phenomena (Volume 265)

Pages:

1086-1091

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.265.1086

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Online since:

September 2017

Authors:

L.L. Demidenko*

Keywords:

Continuous Casting Machine, Continuously Cast Bar, Energy Saving, Heat Flow, Heat Insulation, Mathematical Simulaton, Thermal Balance

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* - Corresponding Author

[1] N. Susumu, H. Michigasi, A. Keiji, Technologies of continuous casting - direct rolling, Fucher Hittenprax, Metall. 23(4) (1985) 302-306, 308-316.

[2] Direct rolling process at Nippon Steel k. k., 33 Metal Prod. 26(4) (1988) 15.

[3] Z. Yin, C. Liguo, H. Youduo, L. Shigi, S. Yishen, Flow and temperature fields in slab continuous casting molds, Univ. Sci. And Technol, Beijing. 7(2) (2000) 103-106.

[4] Y. Katsuma, K. Tomohiko, W. Tadao, A. Yoshihiro, Improvement of continuous casting technology for direct charging process at Kastima No. 3 caster, 70th Steelmak. Conf. Proc., Warrendale, Pa. 70 (1987) 231-235.

[5] S. Kenichi, F. Toshio, I. Takuo, 70th Steelmak. Conf. Proc., Pittsburgh Meet., Warrendale, Pa. 70 (1987) 281-283.

[6] I. Hei-ichiro, N. Susumu, H. Michiyasu, I. Katsuyuki, Progress on CC-DR process (direct linked process of continuous casting and rolling mill) at Sakai Works, Washington Meet, Warrendale, Pa. 69 (1986) 449-456.

[7] Advanced CC-DR process goes operation at Yawata works, Nippon Steel News. 206 (1988).

[8] M. Naonori, O. Mayumi, I. Eiji, I. Katzuyuki, High-temperature method of slab casting at continuous casting machine for transportation to a remoted rolling mill for direct rolling, Iron and Steel. 74(7) (1988) 1227-1234.

[9] N.C. Machingawuta, S. Bagha, P. Grieveson, Heat transfer simulation for continuous casting, Steelmaking conference proceedins, Washington. 74 (1991) 163-170.

[10] Yu.A. Samoilovitch, Steel bar. Solidification and cooling, Belorussian Science, Minsk. 2 (2000) 637.

[11] V.A. Emelyanov, Thermal performance of continuous casters, Metallurgy, Moscow, (1988).

[12] S.K. Katz, High-temperature heat insulating materials, Metallurgy, Moscow, (1981).

[13] V.T. Borisov, V.V. Vinogradov, I.L. Tyazhelnikova, Near-equilibrium theory of two-phase zone and its application for alloys solidification, News bulletin of higher educational institutions. Ferrous metallurgy. 5 (1977) 127-134.

[14] D. Kh. Devyatov, L.L. Demidenko, Optimal parameters of the zone of thermal treatment of the continuously cast slab at the continuous casting machine, News Bulletin of higher education institutions. Ferrous metallurgy. 2 (1995) 62-64.

[15] L.L. Demidenko, Mathematical simulation of the concast bar cooling at the continuous casting machine, Magnitogorsk State Technical University, Magnitogorsk, (2007).

[16] L.I. Turchak, Principles of numerical techniques, Science, Mosocw, (1987).

[17] L.L. Demidenko, G.M. Korinchenko, D.V. Svalov, A.D. Yakovlev, Implementation of the numerical methods for solution of two-dimensional thermal conductivity equation, Application of mathematics in economic and technical investigations. Collection of scientific articles, Magnitogorsk, (2011).

[18] A.A. Samarskiy, E.S. Nikolayev, Solution methods of finite-difference equations, Science, Moscow, (1978).

[19] A.A. Samarskiy, A.V. Gulin, Numerical techniques, Science, Moscow, (1989).

[20] E.A. Volkov, Numerical techniques, Science, Moscow, (1987).