A description is provided for a new patented design of a slab crystallizer and its cooling system with calculation results and identified shortcomings obtained previously. In the work using Autodesk Simulation CFD software, heat transfer is simulated in slab molds of two designs with different wall materials and cooling systems. Melt is supplied to the crystallizer through a submersible deep-bottom nozzle with two outlets. Results of heat transfer modeling using the program are presented in the form of temperature distribution along the length of the mold wide wall. Workpiece crust thickness is considered according to previous calculation results. Maximum values of wall temperatures obtained are comparable with calculations performed previously. Based on results of the color images shown in pictures of the wall surface temperature maximum and minimum values, temperature differences along the length of the walls are established, which are compared for various mold designs, cooling systems, and wall materials. Use of the new slab crystallizer permits an increase in wall working surface temperature up to 300°C and a reduction in temperature drop along the length of the wide wall by a factor of 4–5 compared with the existing copper design of the slab crystallizer. The result obtained points to the possibility of preparing highly-alloyed steel slab billets with a better surface.
Similar content being viewed by others
References
V. V. Stulov, “Questions of energy saving technology and slab crystallizer cooling in order to obtain continuously-cast billets of highly alloyed steels,” Stal’, No. 11, 19–23 (2019).
V. V. Stulov, RF patent 2748425, MPК B22D11/055, Crystallizer for Preparing Slab Billets, No. 2019113750; Claim 07.05.2019; Publ. 25.05.2021, Bull No. 15.
V. V. Stulov, “Energy efficient cooling of a continuous casting mold,” J. of Machinery Manufacture and Reliability, 43, No. 5, 429–434 (2014),
V. V, Stulov and A. V. Aldunin, “Improved technology for preparing sheet rolled product of continuously-cast steel slabs. Part 1. Experimental study of pouring using a supported submersible nozzle,” Metallurg, No. 7, 50–54 (2020).
A. S. Él’derkhanov, A. S. Nuradinov, N. S. Uzdieva, and S. S-S. Akhtaev, “Intensification of heat exchange in a CBCM crystallizer,” Stal’, No. 5, 21–25 (2017).
A. V. Kuklev, S. V. Zarubin, M. P. Gusev, et al., “Mathematical modeling of thick slab cooling within a crystallizer with san additional cooling system,” Stal’, No. 8, 13–16 (2017).
A. A. Vopneruk, R. F. Iskhakov, A. B. Kotel’nikov, K. Yamasaki, et al., “Experience of introducing advanced Japanese steel continuous casting developments in OAO Evraz, NTMK,” Stal’, No. 9, 27–31 (2013).
M. P. Galkin, “Assimilation of continuous casting of high-alloy grade steel in UNRS Moscow metallurgical plant Hammer and Sycle,” Sixty Years of Continuous Steel Development within Russia, Coll. Edited by Prof. S. V. Kolpakov and Prof. E. Kh. Shakhmazov, Intercontact Science, Moscow (2007).
A. V. Supov, N. M. Aleksandrova, R. V. Kakabadze, and V. P. Pavlov, RF Patent 2101129, MPК B22D11/00, Method for Preparing Cast Metal Objects, No. 96118806/02; Claim 26.09.1996; Publ. 10.01.1998. Bull. No. 1.
N. M. Aleksandrova, M. P. Galkin, R. V. Kakabadze, et al., RF Patent 2159291, MPК C21D1/78, Method for Heat Treating Cast Billets of Steels with Low Production Ductility, No. 2000108583; Claim. 10.04.2000; Publ. 20.11.2000, Bull. No. 32.
S. Y. Kim, Y. S. Choi, J. Y. Hwang, and S. H. Lee, “Mold heat transfer behavior at high casting speed over 7 m/minute in the CEM, POSCO,” Iron Steel Technology, 13, No. 7, 47–56 (2016).
M. Raudensky, A. A. Tseng, J. Horsky, and J. Kominek, “Recent developments of water and mist spray cooling in continuous casting of steels,” Metallurgical Research Technology, 113, No. 5, 509 (2016).
M. Hanao, M. Kawamoto, and A. Yamanaka, “Influence of mold flux on initial solidification of hypo-peritectic steel in a continuous casting mold,” Tetsu-to-Hagane. J. of the Iron and Steel Institute of Japan, 100, No. 4, 581−590 (2014).
H. Kania, K. Nowacki, and T. Lis, “Impact of the density of the mould powder on thickness of the layer of liquid slag in the continuous caster mould,” Metallurgiya, 52, No. 2, 204–206 (2013).
Yoichi Inoue, Mizuno Yasuhiro, Tada Kozo, et al., “Quality improvement of continuously cast slab for heavy plate,” Zairyo to Prosesu. CAMP ISIJ, No. 23, 24–26 (2010).
P. B. Lee, O. E. Ramirez-Lopez, K. C. Mills, et al., “Review: the “butterfly effect” in continuous casting,” Ironmaking and Steelmaking, 39, No. 4, 244–253 (2012).
K. C. Mills, Sh. Karagadde, P. D. Lee, L. Yuan, and F. Shahbazian, “Calculation of physical properties for use in models of continuous casting process-part 1: Mould slags,” ISIJ Intern., 56, No. 2, 264–273 (2015).
Huixiang Yu, Xiaohuan Deng, Xinhua Wand Dong, et al., “Characteristics of subsurface inclusions in deep-drawing steel slabs at high casting speed,” Metallurgical Research Technology, No. 112, 608–619 (2015).
S. Street, K. James, N. Minor, et al., “Production of high-aluminium steel slabs,” Iron Steel Technology, 5, No. 7, 38–49 (2008).
X. Zang, X. Wang, Y. Man, et al., “Investigation of friction force between mould and strand shell under sinusoidal and nonsinusoidal oscillation in continuous slab casting,” Steel Research International, 79, No. 7, 564–568 (2008).
E. V. Ametistov, V. A. Grigor’ev, B. T. Emtsev, et al., Heat- and Mass-Transfer. Heat Engineering Experiment: Reference [in Russian], Énergoatomizdat, Moscow (1082).
V. V. Stulov and O. M. Shafiev, “Question of steel billet skin deformation within a Continuous casting crystallizer,” Stal’, No. 6, 13–16 (2021).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallurg, Vol. 66, No. 11, pp. 34–40, November, 2022. Russian https://doi.org/10.52351/00260827_2022_1_34.
Questions of improving continuously-cast billet surface quality and structure and expansion of the range of steels developed with the aim of achieving a competitive product are important for metallurgical enterprises both within our country and overseas
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Stulov, V.V., Barynin, A.M. & Sterlikov, E.V. Preparation of Continuously Cast Highly-Alloyed Steel Slab Billets. Metallurgist 66, 1372–1379 (2023). https://doi.org/10.1007/s11015-023-01452-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11015-023-01452-0