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Physical Simulation of Mold Level Fluctuation Characteristics

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Abstract

Mold level fluctuations have an essential impact on slab quality control. In this study, the wave height and frequency of the fluctuations were analyzed using significant wave height and fast Fourier transform (FFT) in a water model of the mold. The mold flow field distribution was measured by particle image velocimetry (PIV), and the correlation effect between flow field, wave height, and frequency is discussed. The results show that the frequency change of the fluctuations is mainly influenced by the wavelength. The distance between the position of the vortex center and the narrow face of the mold (NF) increases, the travel of the surface liquid mass point increases, and the wavelength of the generated wave becomes longer, resulting in a decrease in frequency. Increasing the surface velocity will promote the overall fluctuations and have a greater impact on the liquid mass point in the fluctuation generating area, thus making the NF amplitude significantly higher. After entering the fluctuation decay area, the amplitude gradually decreases. Waves with frequencies below 0.1 Hz have the largest amplitude variation and are the most important frequency affecting the fluctuation variation. The maximum main frequency may be spontaneously generated.

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Acknowledgments

The authors are grateful for the financial support of this work from the National Natural Science Foundation of China (Grant No. U1860106).

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Authors and Affiliations

  1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, 100083, P.R. China

    Zhendong Wang, Yu Gao & Heng Cui

  2. TangShan Iron & Steel Group Co., Ltd, Tangshan, 063000, Hebei, P.R. China

    Qinglin Shan, Hongwei Pan, Boxun Lu & Juwen Wen

  3. Hebei High Quality Steel Continuous Casting Technology Innovation Center, Tangshan, 063000, Hebei, P.R. China

    Qinglin Shan, Hongwei Pan, Boxun Lu & Juwen Wen

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  1. Zhendong Wang
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  2. Qinglin Shan
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  3. Yu Gao
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  4. Hongwei Pan
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  5. Boxun Lu
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  7. Heng Cui
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Correspondence to Heng Cui.

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Wang, Z., Shan, Q., Gao, Y. et al. Physical Simulation of Mold Level Fluctuation Characteristics. Metall Mater Trans B 54, 2591–2604 (2023). https://doi.org/10.1007/s11663-023-02860-y

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  • DOI: https://doi.org/10.1007/s11663-023-02860-y

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