Influence of continuous steel casting conditions on behavior and stability of liquid mold slag during slab casting - physical modeling

• Autorzy: Bielnicki M. , Jowsa J.

Identyfikatory

DOI

10.7494/mafe.2018.44.1.17

Warianty tytułu

PL

Wpływ warunków ciągłego odlewania stali na zachowanie i stabilność ciekłego żużla krystalizatorowego podczas odlewania wlewków płaskich - modelowanie fizyczne

• Języki publikacji: EN

Abstrakty

EN

This article presents the results of the physical modeling of the continuous casting of steel slabs in a mold. The experiments focused on the assessment of the shape and stability of the liquid mold slag layer, which was reproduced in studies using silicone oil. The experimental tests were carried out for two different geometries of the submerged entry nozzle, two extreme submergence depths of the submerged entry nozzle (0.215 and 0.295 m), and two extreme casting speeds (1.0 and 1.6 m/min) used in industry. For each variant of the experiment, photographic documentation of the oil layer’s behavior was presented and discussed. The research was supplemented with a visualization of the flow structure using a marker for the selected variant of the experiment.

PL

W artykule przedstawiono wyniki modelowania fizycznego ciągłego odlewania stalowych wlewków płaskich w krystalizatorze. Eksperymenty koncentrowały się na ocenie kształtu i stabilności warstwy ciekłego żużla krystalizatorowego, odwzorowanego w badaniach za pomocą oleju silikonowego. Badania modelowe przeprowadzono dla dwóch różnych geometrii wylewu zanurzeniowego, dwóch skrajnych głębokości zanurzenia wylewu (0,215 m i 0,295 m) oraz dwóch skrajnych prędkości odlewania (1,0 m/min i 1,6 m/min) stosowanych w przemyśle. Dla każdego wariantu eksperymentu zaprezentowano i omówiono dokumentację fotograficzną zachowania się warstwy oleju. Badania uzupełniono znacznikową wizualizacją struktury przepływu dla wybranego wariantu eksperymentu.

Słowa kluczowe

EN

continuous steel casting; mold; submerged entry nozzle; mold slag; physical modeling

PL

odlewanie ciągłe stali; krystalizator; wylew zanurzeniowy; żużel krystalizatorowy; modelowanie fizyczne

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Metallurgy and Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 44, no. 1
• Strony: 17--29
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Bielnicki M.

• Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Department of Metals Extraction and Recirculation, Czestochowa, Poland

autor

Jowsa J.

• Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Department of Metals Extraction and Recirculation, Czestochowa, Poland

Bibliografia

• [1] Steel Statistical Yearbook 2017. www.worldsteel.org [07.02.2018]
• [2] Jeon Y.J., Sung H.J., Lee S.: Flow Oscillations and Meniscus Fluctuations in a Funnel-type Water Mold Model. Metallurgical and Materials Transactions B, 41, 1 (2010), 121–130
• [3] Torres-Alonso E., Morales R.D., García-Hernández S., Palafox-Ramos J.: Cyclic Turbulent Instabilities in a Thin Slab Mold. Part I: Physical Model. Metallurgical and Materials Transactions B, 41, 3 (2010), 583–597
• [4] Morales R.D., Tang Y., Nitzl G., Eglsäeer C., Hackl G.: Design of a Submerged Entry Nozzle for Thin Slab Molds Operating at High Casting Speeds. ISIJ International, 52, 9 (2012), 1607–1615
• [5] Arcos-Gutierrez H., Barrera-Cardiel G., Barreto J. de J., Garcia-Hernandez S.: Numerical Study of Internal SEN Design Effects on Jet Oscillations in a Funnel Thin Slab Caster. ISIJ International, 54, 6 (2014), 1304–1313
• [6] Suzuki M., Suzuki M., Nakada M.: Perspectives of Research on High-speed Conventional Slab Continuous Casting of Carbon Steels. ISIJ International, 41, 7 (2001), 670–682
• [7] Li L.-P., Wang X.-H., Deng X.-X., Ji C.-X.: Process and Quality Control during High Speed Casting of Low Carbon Conventional Slab. Journal of Iron and Steel Research International, 22, Supplement 1 (2015), 1–9
• [8] Zhang L., Yang S., Cai K., Li J., Wan X., Thomas B.G.: Investigation of Fluid Flow and Steel Cleanliness in the Continuous Casting Strand. Metallurgical and Materials Transactions B, 38, 1 (2007), 63–83
• [9] Bielnicki M., Jowsa J., Cwudziński A.: Multiphase Numerical Model of Molten Steel and Slag Behavior in the Continuous Casting Mould. Archives of Metallurgy and Materials, 60, 1 (2015), 257–262
• [10] Jowsa J., Bielnicki M., Cwudziński A.: Numerical Modeling of Metal/Flux Interface in a Continuous Casting Mould. Archives of Metallurgy and Materials, 60, 4 (2015), 2905–2912
• [11] Wang Z., Mukai K., Ma Z., Nishi M., Tsukamoto H., Shi F.: Influence of Injected Ar Gas on the Involvement of the Mold Powder under Different Wettabilities between Porous Refractory and Molten Steel. ISIJ International, 39, 8 (1999), 795–803
• [12] Calderon-Ramos I., Barreto J. de J., Garcia-Hernandez S.: Physical and Mathematical Modelling of Liquid Steel Fluidynamics in a Billet Caster. ISIJ International, 53, 5 (2013), 802–808
• [13] Morales-Higa K., Guthrie R.I.L., Isac M., Morales R.D., Labrecque C., Lapointe F.: A Comparative Study of Multiport Nozzles in a Square Billet Mold. 8th European Continuous Casting Conference, Graz, Austria 23–26.06.2014. The Austrian Society of Metallurgy and Materials, 2014, 477–486
• [14] Jin X., Chen D.F., Xie X., Shen J., Long M.: Investigation on Water Model for Fluid Flow in Slab Continuous Casting Mold with Consideration of Solidified Process. Steel Research International, 84, 1 (2013), 31–39
• [15] Mills K.C.: Structure and Properties of Slags Used in the Continuous Casting of Steel. Part 1: Conventional Mould Powders. ISIJ International, 56, 1 (2016), 1–13
• [16] Calderón-Ramos I., Morales R.D., Garcia-Hernandez S., Ceballos-Huerta A.: Effects of Immersion Depth on Flow Turbulence of Liquid Steel in a Slab Mold Using a Nozzle with Upward Angle Rectangular Ports. ISIJ International, 54, 8 (2014), 1797–1806
• [17] Najjar F.M., Thomas B.G., Hershey D.E.: Numerical Study of Steady Turbulent Flow through Bifurcated Nozzles in Continuous Casting. Metallurgical and Materials Transactions B, 26, 4 (1995), 749–765

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).