Characteristics of shell thickness in a slab continuous casting mold

Di-feng Wu, Shu-sen Cheng, Zi-jian Cheng

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    Di-feng Wu, Shu-sen Cheng, and Zi-jian Cheng, Characteristics of shell thickness in a slab continuous casting mold, Int. J. Miner. Metall. Mater., 16(2009), No. 1, pp.25-31. https://dx.doi.org/10.1016/S1674-4799(09)60005-4
    Di-feng Wu, Shu-sen Cheng, and Zi-jian Cheng, Characteristics of shell thickness in a slab continuous casting mold, Int. J. Miner. Metall. Mater., 16(2009), No. 1, pp.25-31. https://dx.doi.org/10.1016/S1674-4799(09)60005-4
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    Metallurgy

    Characteristics of shell thickness in a slab continuous casting mold

    • School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

    • Steelmaking Plant, Jiuquan Iron and Steel Co. Ltd., Jiayuguan 735100, China

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No.60672145).

      通信作者:

      Di-feng Wu E-mail: wudifeng_0121083@163.com

    中文摘要

    The key to reduce shell breakout in the continuous casting process is to control shell thickness in the mold. A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume of fluid (VOF) model and the enthalpy-porosity scheme was conducted and the emphasis was put upon the flow effect on the shell thickness profiles in longitudinal and transverse directions. The results show that the jet acts a stronger impingement on the shell of narrow face, which causes a zero-increase of shell thickness in a certain range near the impingement point. The thinnest shell on the slab cross-section locates primarily in the center of the narrow face, and secondly near the comer of the wide face. Nozzle optimization can obviously increase the shell thickness and make it more uniform.

     

    Metallurgy

    Characteristics of shell thickness in a slab continuous casting mold

    Author Affilications

      • School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

      • Steelmaking Plant, Jiuquan Iron and Steel Co. Ltd., Jiayuguan 735100, China

    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No.60672145).

    • Received: 05 February 2008;
    The key to reduce shell breakout in the continuous casting process is to control shell thickness in the mold. A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume of fluid (VOF) model and the enthalpy-porosity scheme was conducted and the emphasis was put upon the flow effect on the shell thickness profiles in longitudinal and transverse directions. The results show that the jet acts a stronger impingement on the shell of narrow face, which causes a zero-increase of shell thickness in a certain range near the impingement point. The thinnest shell on the slab cross-section locates primarily in the center of the narrow face, and secondly near the comer of the wide face. Nozzle optimization can obviously increase the shell thickness and make it more uniform.

     

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