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首页> 外文期刊>ISIJ international >Mathematical Modeling of Flow and Heat Transfer Behavior of Liquid Slag in Continuous Casting Mold with Argon Blowing
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Mathematical Modeling of Flow and Heat Transfer Behavior of Liquid Slag in Continuous Casting Mold with Argon Blowing

机译：氩气吹塑液体炉渣流动和传热行为的数学建模

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摘要

The bubbles generated by argon blowing in a nozzle have important effects on the flow and heat transfer behavior of mold slag. To determine the effect of argon blowing on the flow and heat transfer behavior of liquid slag in the mold, we developed three-dimensional mathematical models coupled the volume of fluid and discrete phase models. The results showed a small circulation flow of liquid mold slag occurred near the nozzle side face and the mold narrow face respectively at the center plane between the mold wide faces. Additionally, we identified a larger circulation of liquid mold slag in the middle region of the mold. With increased argon flow rate, the flow velocity peak at the liquid steel and slag interface decreased, the temperature of the liquid mold slag increased. A moderate flow rate of argon improved the uniformity of flow velocity and temperature distribution of liquid slag and reduced the flow velocity peak at the interface of the liquid steel and slag. To avoid the solidification of liquid steel at the steel-slag interface near the mold face, moderately high casting speed and argon flow rate and larger inclination angle and immersion depth of the submerged entry nozzle may be beneficial. These results provide a theoretical basis to optimize the parameters of the argon blowing process and improve slab quality.
机译：氩气中吹入喷嘴产生的气泡对模具炉渣的流动和传热行为具有重要影响。为了确定氩气吹对模具中液体渣的流动和传热行为的效果，我们开发了三维数学模型，耦合流体和离散相位模型的体积。结果表明，分别在模具宽面之间的中心平面附近发生液体模具炉渣的小循环流动。另外，我们鉴定了模具中部区域中的液体模塑渣的较大循环。随着氩流量增加，液钢和渣界面处的流速峰值降低，液体模具渣的温度增加。氩气的中等流速改善了液体炉渣的流速和温度分布的均匀性，并在液钢和炉渣的界面处减少了流速峰值。为避免在模具面附近的钢渣接口处凝固液钢，适度高的铸造速度和沉淀入口喷嘴的较大倾斜角和浸入深度可以是有益的。这些结果提供了优化氩吹割过程的参数并提高板坯质量的理论依据。

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  • 来源
    《ISIJ international》 |2019年第7期|1266-1275|共10页
  • 作者

    Changgui CHENG; Haibiao LU; Yang LI; Xufeng QING; Yan JIN;

  • 作者单位

    The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081 China Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and Technology Wuhan 430081 China;

    The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081 China Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and Technology Wuhan 430081 China;

    The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081 China Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and Technology Wuhan 430081 China;

    The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081 China Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and Technology Wuhan 430081 China;

    The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081 China Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and Technology Wuhan 430081 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    continuous casting; liquid mold flux; argon blowing; flow and heat transfer behavior; mathematical modeling;

    机译：连续铸造;液体模态;氩气;流动和传热行为;数学建模;

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