Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
권호 표지
DOI QR코드

DOI QR Code

Asymmetric Flow Phenomena and Top Surface Behavior in Slide-Gate Nozzle and Mold during Continuous Casting of Steel

철강 연속주조 슬라이드게이트 노즐 및 주형내 비대칭 유동 현상과 탕면 거동

  • Min-Kyoung Kim (Department of Metallurgical Engineering, Pukyong National University) ;
  • Tae-Wan Jang (Department of Metallurgical Engineering, Pukyong National University) ;
  • Seong-Mook Cho (Department of Metallurgical Engineering, Pukyong National University)
  • 김민경 (부경대학교 융합소재공학부 금속공학전공) ;
  • 장태완 (부경대학교 융합소재공학부 금속공학전공) ;
  • 조성묵 (부경대학교 융합소재공학부 금속공학전공)
  • Received : 2024.08.19
  • Accepted : 2024.08.28
  • Published : 2024.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Steel is one of the most widely used metals for various industries in the world. Over 95% of steels in the world is manufactured from continuous casting processes. During continuous casting, there are many phenomena including fluid flow, heat transfer, solidification, particle transport, etc. in mold regions. Molten steel continuously flows into the mold through the nozzle, and generates asymmetric flow pattern. The asymmetry of flow behaviors affects the behavior of surface slag/molten steel interface on the top of molten steel pool. These phenomena are influential on the quality of final steel products. This work investigates the asymmetric flow and the top surface behaviors in mold region with a slide-gate nozzle during continuous casting of steel slabs, by applying lab-scale water model experiments.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의학술연구비(2021)에 의하여 연구되었음.

References

  1. World Steel Association. In World Steel in Figures 2023, World Steel Association: Brussels, Belgium, 2023. 
  2. Thomas, B. G., "Continuous Casting", in Yearbook of Science and Technology (New York: McGraw-Hill), pp. 62-65, 2004. 
  3. Von Helmholtz, H. L. F., "Uber discontinuierliche fluessigkeits-bewegungen", Monatsberichte der Koniglichen Preussische Akademie der Wissenschaften zu Berlin, Vol. 23, PP.215-228, 1868. 
  4. Thomson, W., "Hydrokinetic Solutions and Observations", Philosophical Magazine, Vol. 42, pp. 362-377, 1871.
  5. Funada. T. and Joseph, D. D., "Viscous Potential Flow Analysis of Kelvin-Helmholtz Instability in a Channel", J. Fluid, Vol. 445, pp. 263-283, 2001. 
  6. Li, B. and Tsukihashi, F., "Vortexing flow patterns in a water model of slab continuous casting mold", ISIJ Int., 45(1): p. 30-36, 2005. 
  7. Kasai, N. and Iguchi, M., "Water-model experiment on melting powder trapping by vortex in the continuous casting mold", ISIJ Int., Vol. 47(7) p. 982-987, 2007. 
  8. Cho, S.-M., Thomas, B.G., Kim, S.-H., "Effect of nozzle port angle on transient flow and surface slag behavior during continuous steel-slab casting", Metall Mater Trans B, Vol. 50(1): 52-76, 2019. 
  9. Hibbeler, LC., Thomas, B.G., "Mold slag entrainment mechanisms in continuous casting molds", Iron Steel Technol., Vol. 10, pp. 121-134, 2013. 
  10. Cho, S.-M., Liang, M., Olia, H., Das, L., Thomas, B. G., "Multiphase Flow-Related Defects in Continuous Casting of Steel Slabs", TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings (Materials Processing Fundamentals), San Diego, CA, Feb. 23-27, 2020, The Minerals, Metals & Materials Series, Warrendale, PA., pp. 1161-1173, 2020. 
  11. Bai, H. and Thomas, B. G., "Turbulent Flow of Liquid Steel and Argon Bubbles in Slide-Gate Tundish Nozzles, Part II, Effect of Operation Conditions and Nozzle Design", Metallurgical and Materials Transactions B, Vol. 32B(2), pp. 269-284, 2001. 
  12. Chaudhary, R., Lee, G.-G., Thomas, B.G., Cho, S.-M., Kim, S.-H., Kwon, O.-D., "Effect of Stopper-Rod Misalignment on Fluid Flow in Continuous Casting of Steel", Metallurgical and Materials Transactions B, Vol. 42(2), pp. 300-315, 2011. 
  13. Cho, S.-M., Kim, S.-M., Chaudhary, R., Thomas, B. G., Shin, H.-J., Choi, W.-R. and Kim, S.-K., "Effect of Nozzle Clogging on Surface Flow and Vortex Formation in the Continuous Casting Mold", Iron and Steel Technology, Vol. 9(7), pp. 85-95, 2012. 
  14. Yu, Y.T. and Lee, C.-K., "A Study on Analysis Results and Comparison of Radiator Grille by Gate Type", Design & Manufacturing, Vol. 18, No. 01, pp. 39-45, 2024. 
  15. Mun, S.-M., Jun, S.-Y., Kim, S.-G., Yun, J.-W., "A Study on the effect of gate and glass fiber content on deformation of injection molded product", Design & Manufacturing, Vol. 18, No. 01, pp. 46-52, 2024. 
  16. Han, S.-R., "Verification of gate balancing equation using injection molding analysis", J. Korea Society of Die & Mold Engineering, Vol. 12, No. 3, PP. 55-59, 2018. 
  17. White, F. M., "Fluid Mechanics", 4th ed., Mc-Graw Hill, New York, NY,1999. 
  18. Cho, S.-M., Thomas, B.G. and Kim, S.-H., "Transient Two-Phase Flow in Slide-Gate Nozzle and Mold of Continuous Steel Slab Casting with and without Double-Ruler Electro-Magnetic Braking", Metallurgical and Materials Transactions B, Vol. 47B, No. 5, pp.3080-3098, 2016. 
  19. Hershey, D. E., Thomas, B. G. and Najjar, F. M., "Turbulent Flow through Bifurcated Nozzles", International Journal for Numerical Methods in Fluids, Vol. 17(1), pp. 23-47, 1993. 
  20. Dauby, P.H., "Continuous casting: Make better steel and more of it!", Revue de Metallurgie, Vol. 109, pp. 113-136, 2012.