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结晶器电磁搅拌对方坯中非金属夹杂物去除的影响研究

王勇

王勇. 结晶器电磁搅拌对方坯中非金属夹杂物去除的影响研究[J]. 钢铁钒钛, 2022, 43(1): 131-134, 151. doi: 10.7513/j.issn.1004-7638.2022.01.020
引用本文: 王勇. 结晶器电磁搅拌对方坯中非金属夹杂物去除的影响研究[J]. 钢铁钒钛, 2022, 43(1): 131-134, 151. doi: 10.7513/j.issn.1004-7638.2022.01.020
Wang Yong. Study on the effect of electromagnetic stirring of mold on the removal of non-metallic inclusions in billet[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 131-134, 151. doi: 10.7513/j.issn.1004-7638.2022.01.020
Citation: Wang Yong. Study on the effect of electromagnetic stirring of mold on the removal of non-metallic inclusions in billet[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(1): 131-134, 151. doi: 10.7513/j.issn.1004-7638.2022.01.020

结晶器电磁搅拌对方坯中非金属夹杂物去除的影响研究

doi: 10.7513/j.issn.1004-7638.2022.01.020
详细信息
  • 中图分类号: TF777

Study on the effect of electromagnetic stirring of mold on the removal of non-metallic inclusions in billet

  • 摘要: 电磁力影响金属熔体中非金属夹杂物的分布及颗粒的传输速度,根据这一原理,进行了结晶器电磁搅拌对方坯中非金属夹杂物去除影响的试验研究。采用200、250 A和300 A这3种不同的EMS电流对方坯坯料进行了夹杂物分离和去除的试验,并采集样品进行能谱分析。结果表明,当结晶器的电磁搅拌参数为300 A电流和3 Hz频率时,铸坯中的非金属夹杂物控制效果最佳,比不采用电磁搅拌减少了35%。
  • 图  1  电磁力对钢液中夹杂物分布的影响

    Figure  1.  Influence of electromagnetic force on the distribution of inclusions within molted steel

    图  2  不同EMS电流下夹杂物分布(×40)(酸浸的低倍组织结果)

    Figure  2.  Inclusions distribution under different EMS currents (×40)

    (a) I=0 A, f=0 Hz; (b) I=200 A, f=3 Hz; (c) I=250 A, f=3 Hz; (d) I=300 A, f=3 Hz

    图  3  方坯能谱样取样位置

    Figure  3.  Sampling locations of energy spectrum on billet

    图  4  无电磁搅拌夹杂物能谱图(I=0 A,f=0 Hz)

    Figure  4.  Energy spectrum of the inclusion without electromagnetic stirring (I=0 A, f=0 Hz)

    图  5  SiO2、MgO夹杂物能谱图(I=200 A,f=3 Hz)

    Figure  5.  Energy spectrum of the inclusion MgO (I=200 A,f=3 Hz)

    图  6  CaS夹杂物能谱图(I=250 A,f=3 Hz)

    Figure  6.  Energy spectrum of the inclusion CaS (I=250 A,f=3 Hz)

    图  7  钙化效果较好的铝酸钙夹杂物能谱图(I=300 A,f=3 Hz)

    Figure  7.  Energy spectrum of calcium aluminate inclusions with good calcification effect

    图  8  采用和未采用M-EMS 对夹杂物分布影响的比较

    Figure  8.  Comparison of inclusions distribution with and without M-EMS

    表  1  连铸浇注工艺参数

    Table  1.   Process parameters for the continuous casting

    炉批号平台温度/℃中包温度1/℃中包温度2/℃中包温度3/℃中包平均温度/℃过热度/℃拉速/(m·min−1
    1 1569 1545 1540 1535 1540 29 1.95
    2 1565 1540 1535 1531 1535 24 1.95
    3 1570 1545 1540 1536 1540 29 1.95
    4 1567 1541 1535 1529 1535 24 1.95
    5 1566 1540 1535 1530 1535 24 1.95
    6 1569 1545 1540 1534 1539.7 28.7 1.95
    7 1567 1542 1536 1529 1535.7 24.7 1.95
    8 1560 1538 1530 1525 1531 20 1.95
    9 1562 1539 1533 1528 1533.3 22.3 1.95
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-10-12
  • 网络出版日期:  2022-04-24
  • 刊出日期:  2022-02-28

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