An anchor-shaped geometrical design for a Submerged Entry Nozzle for the slab continuous casting of steel is presented in this work. To evaluate its performance, transient 3D multiphase numerical simulations were carried out using the Computational Fluid Dynamics technique. The performance of the proposed nozzle is numerically compared with that of a conventional cylindrical nozzle. Computer results show that the chance of formation of Karman’s vortexes and powder entrapment becomes small for the anchor-shaped SEN.
References
[1]
Slezak, W., Korolczuk, M. and Migas, P. (2015) High Temperature Rheometric Measurements of Mold Powder. Archives of Metallurgy and Materials, 60, 289-294.
http://dx.doi.org/10.1515/amm-2015-0046
[2]
Cramb, A.W. (2003) The Making, Shaping and Treating of Steel. Continuous Casting Volume. AISE Steel Foundation, Pittsburgh.
[3]
Thomas, B.G. (2005) Modeling of Continuous-Casting Defects Related to Mold Fluid Flow. The 3rd International Congress on Science & Technology of Steelmaking, AIST, Charlotte, 9-12 May 2005, 847-861.
[4]
Garcia-Hernandez, S., Morales, R.D., Barreto, J.J. and Morales-Higa, K. (2013) Numerical Optimization of Nozzle Ports to Improve the Flu Dynamics by Controlling Backflow in a Continuous Casting Slab Mold. ISIJ International, 53, 1794-1802.
http://dx.doi.org/10.2355/isijinternational.53.1794
[5]
Iguchi, M., Yoshida, J., Shimizu, T. and Mizuno, Y. (2000) Model Study on the Entrapment of Mold Powder into Molten Steel. ISIJ International, 40, 685-691.
http://dx.doi.org/10.2355/isijinternational.40.685
[6]
Iguchi, M. and Ilegbusi, O.J. (2011) Modeling Multiphase Materials Processes: Gas Liquid Systems. Springer, New York. http://dx.doi.org/10.1007/978-1-4419-7479-2
[7]
Tsutsumi, K., Watanabe, K., Suzuki, M., Nakada, M. and Shiomi, T. (2004) Effect of Properties of Mold Powder Entrapped in Molten Steel in a Continuous Casting Process. 7th International Conference on Molten Slags Fluxes and Salts, The South African Institute of Mining and Metallurgy, Johannesburg, 25-28 January 2004, 803-806.
[8]
Ueda, Y., Kida, T. and Iguchi, M. (2004) Unsteady Pressure Coefficient around an Elliptic Immersion Nozzle. ISIJ International, 44, 1403-1409.
http://dx.doi.org/10.2355/isijinternational.44.1403
[9]
Real, C., Miranda, R., Vilchis, C., Barron, M.A., Hoyos, L. and Gonzalez, J. (2006) Transient Internal Flow Characterization of a Bifurcated Submerged Entry Nozzle. ISIJ International, 46, 1183-1191. http://dx.doi.org/10.2355/isijinternational.46.1183
[10]
Liang, Z., Wang, N., Zou, Z. and Yu, A. (2009) Optimization of Submerged Entry Nozzle of Continuous Casting Slab. Proceedings of the 2009 TMS Annual Meeting and Exhibition, San Francisco, 16-19 February, 569-574.
[11]
Tsukaguchi, Y., Hayashi, H., Kurimoto, H., Yokoya, S., Marukawa, K. and Tanaka, T. (2010) Development of Swirling-Flow Submerged Entry Nozzle for Slab Casting. ISIJ International, 50, 721-729. http://dx.doi.org/10.2355/isijinternational.50.721
[12]
Kuroda, T., Mizobe, A. and Kurisu, J. (2011) Flow Optimization in the Mould by Port Design Improvement of Submerged Entry Nozzle. Proceedings UNITECR 2011 Congress: 12th Biennial Worldwide Conference on Refractories—Refractories-Technology to Sustain the Global Environment, The American Ceramic Society, 30 October-2 November, Kyoto, 434-437.
[13]
Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002) Transport Phenomena. 2nd Edition, Wiley, New York.
[14]
Thomas, B., Yuan, Q., Sivaramakhrisnan, S., Shi, T., Vanka, S.P. and Assar, M.B. (2001) Comparison of Four Methods to Evaluate Fluid Velocities in a Continuous Slab Casting Mold. ISIJ International, 41, 1262-1271. http://dx.doi.org/10.2355/isijinternational.41.1262
[15]
Solorio-Díaz, G., Morales, R.D., Palafox-Ramos, J., García-Demedices, L. and Ramos-Ban- deras, A. (2004) Analysis of Fluid Flow Turbulence in Tundishes Fed by a Swirling Ladle Shroud. ISIJ International, 44, 1024-1032.
http://dx.doi.org/10.2355/isijinternational.44.1024
[16]
Hirt, C.W. and Nichols, B.D. (1981) Volume of Fluid (VOF) Method for the Dynamics of Free Boundaries. Journal of Computational Physics, 39, 201-225.
http://dx.doi.org/10.1016/0021-9991(81)90145-5
