摘要
以Sn-Pb-Bi低熔点合金为模拟介质,建立了立式电磁制动作用下结晶器内液态金属流动的物理模型,研究了立式电磁制动条件下结晶器内的金属液面波动行为。利用激光液位仪对磁极宽度中心位置处的金属液面瞬时波动进行测量,采用"浸度法"对结晶器厚度中心面处的弯月面波形进行测量。试验结果表明,随着电流强度的增加,立式电磁制动的施加可以显著降低液面波高,稳定液面波动,减小卷渣发生的可能性。
Using low melting point alloy Sn-Pb-Bi as the medium, a physical model of liquid alloy flow in the mold with vertical electromagnetic brake was built to investigate the level fluctuation behavior of liquid alloy under the condi- tion of vertical electromagnetic brake. The instantaneous level fluctuation of liquid alloy at the center of pole width was measured by laser displacement, and the meniscus contour of liquid alloy with different current value was obtained by immersion plating method. The experimental results showed that as increasing of current value, the application of verti- cal electromagnetic brake can significantly decrease the height of meniscus and stable the level fluctuation of liquid alloy and then reduce the possibility of slag entrapment.
出处
《连铸》
2016年第6期15-20,共6页
Continuous Casting
基金
国家自然科学基金资助项目(51574083
51474065)
关键词
连铸
结晶器
立式电磁制动
液面波动
continuous casting
mold
vertical electromagnetic brake
level fluctuation
