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Mathematical Study of Realistic Removal Rates of Non-metallic Inclusions in Continuous Casting Tundish Using Optimized Criterion

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Abstract

The cleanliness of high-quality steel largely depends on the distribution and characteristics of non-metallic inclusions. The removal of inclusions in the tundish can be studied by simulation, but the traditional criterion tends to predict high removal rates. In this study, the touched inclusion fraction at the free surface of the tundish was analyzed by considering the fundamental forces acting on the inclusions. An optimized criterion based on the direction of the inclusion balance force was established to judge the inclusion removal behavior. The simulation results obtained using the optimized criterion were more consistent with actual industrial trial results. In addition, the connection between the removal behaviors of inclusions of different sizes and flow time of liquid steel was studied using the new criterion. The optimized criterion for inclusion removal created a prerequisite for improving the combined model and dead zone volume. The method for calculating the dead zone volume was upgraded.

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Competing Interest

The authors declare no conflict of interest.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P.R. China

    Cheng Yao, Min Wang, Hanghang Zhu, Lidong Xing & Yanping Bao

  2. Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing, Beijing, 100083, P.R. China

    Min Wang & Lidong Xing

  3. MCC Capital Engineering and Research Incorporation Co, Ltd, Beijing, 100083, P.R. China

    Hanghang Zhu

Authors
  1. Cheng Yao
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  2. Min Wang
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  3. Hanghang Zhu
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  4. Lidong Xing
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  5. Yanping Bao
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Correspondence to Min Wang.

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Manuscript submitted September 4, 2022; accepted February 12, 2023.

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Yao, C., Wang, M., Zhu, H. et al. Mathematical Study of Realistic Removal Rates of Non-metallic Inclusions in Continuous Casting Tundish Using Optimized Criterion. Metall Mater Trans B 54, 1144–1158 (2023). https://doi.org/10.1007/s11663-023-02750-3

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  • DOI: https://doi.org/10.1007/s11663-023-02750-3

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