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首页> 外文期刊>ISIJ international >Comparison of Thermo-electromagneto-hydrodynamic Multi-physical Fields in ESR Furnace with Vibrating and Traditional Electrodes
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Comparison of Thermo-electromagneto-hydrodynamic Multi-physical Fields in ESR Furnace with Vibrating and Traditional Electrodes

机译：用振动电极和传统电极比较电渣重熔炉中热电磁流体动力学的多物理场

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摘要

The transient three-dimensional (3D) full-coupled multi-physical fields in the Electroslag-Remelting (ESR) process with the vibrating and traditional electrodes have been compared in this paper. A mathematical model for simultaneously predicting the electromagnetic phenomenon, heat transfer, two phase flow and solidification has been established in the ESR furnace. Especially, the Joule heating and electromagnetic force are calculated by self-developed program based on the magnetohydrodynamic (MHD) model. The effects of the vibrating modes, such as horizontal and vertical vibration, on the heat transfer and MHD two-phase flow as well as solidification are clarified. The results indicate that the melting rating can be increased in the ESR process with vibrating electrode. The small-scale factory experiments are conducted and a reasonable agreement between the experimental observations and numerical results is obtained. The variation of temperature distribution dominated by the dropping behavior of the metal droplets is ordered and periodic. Particularly, the distinct variation of temperature distribution occurs beneath the bottom tip of the electrode. The horizontal vibrating ESR process can generate smaller metal droplets, which provide less energy (heat plus momentum) into the metal pool, constitute a shallower pool and a lower average temperature gradient. Moreover, with the increasing amplitude or frequency, the average temperature gradients for both cases decrease.
机译：本文比较了振动和传统电极在电渣重熔（ESR）过程中的瞬态三维（3D）全耦合多物理场。在ESR炉中建立了同时预测电磁现象，传热，两相流和凝固的数学模型。特别是，通过基于磁流体动力学（MHD）模型的自行开发的程序来计算焦耳热和电磁力。阐明了振动模式（例如水平和垂直振动）对传热和MHD两相流以及凝固的影响。结果表明，在带振动电极的ESR工艺中，熔融等级可以提高。进行了小型工厂实验，并在实验观察结果和数值结果之间取得了合理的一致性。由金属滴的滴落行为决定的温度分布变化是有序且周期性的。特别地，温度分布的明显变化发生在电极的底部尖端下方。水平振动ESR工艺可以产生较小的金属滴，从而为金属池提供较少的能量（热量加动量），构成较浅的池，并且平均温度梯度较低。此外，随着幅度或频率的增加，两种情况的平均温度梯度都会降低。

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  • 来源
    《ISIJ international》 |2017年第1期|91-99|共9页
  • 作者

    Fang WANG; Qiang WANG; Baokuan LI;

  • 作者单位

    School of Materials and Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819 China;

    School of Materials and Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819 China;

    School of Materials and Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819 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

    ESR; vibrating electrode; MHD; metal droplet; dropping behavior; solidification;

    机译：ESR;振动电极MHD;金属滴掉落行为凝固;

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