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以低熔点 Pb-Sn-Bi合金作为钢液模拟工质,对谐波高频磁场作用下,方坯软接触电磁连铸结晶器内钢液的弯月面行为进行热模拟实验研究、通过录像手段记录高频磁场作用下非导电石英玻璃容器内液态金属的弯月面行为,并采用“浸镀法”测得不同实验条件下的弯月面形状,掌握了高频磁场作用下液态金属弯月面的波动特性及不同感应线圈实验参数对弯月面行为特征的影响效果.研究表明:方坯结晶器内高频磁场沿结晶器周向的不均匀分布是影响弯月面稳定性的重要因素,在设计软接触电磁连铸结晶器时,应在结晶器角部对磁场采取适当的屏蔽措施.此外,感应线圈匝数以及感应线圈工作位置的选取将在很大程度上影响到钢液弯月面的形态和稳定性,是影响软接触电磁连铸铸坯表面质量的重要工艺参数.
Using the low melting point Pb-Sn-Bi alloy as the molten steel simulation working fluid, the thermal behavior of the liquid steel in the soft contact electromagnetic continuous casting mold of billet under the harmonic high-frequency magnetic field was simulated by thermal simulation. Means to record the meniscus behavior of liquid metal in non-conductive quartz glass containers under high-frequency magnetic field. The shape of meniscus under different experimental conditions is measured by “immersion plating method”, and the effect of liquid metal bending under high frequency magnetic field Effect of Fluctuation on Moon Surface and Experimental Parameters of Different Induction Coils on Behaviors of Meniscus. The results show that the uneven distribution of the high frequency magnetic field in the billet mold along the mold circumference is an important factor affecting the stability of the meniscus. When designing the soft contact electromagnetic continuous casting mold, the magnetic field Take appropriate shielding measures. In addition, the number of turns of the induction coil and the selection of the working position of the induction coil will largely affect the shape and the stability of the meniscus of the molten steel, which is an important process parameter affecting the surface quality of the soft contact electromagnetic continuous casting slab.