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利用自行设计的实验装置研究了电磁出钢装置中上水口填充Fe-C合金时,在承装钢水后Fe-C合金的状态.实验结果表明,在上水口处Fe-C合金自上而下将形成液态Fe-C合金、凝固的Fe-C合金、液态烧结的Fe-C合金、固态烧结的Fe-C合金和原始松散的Fe-C合金等5层.凝固层、液态烧结层和固态烧结层可以在上水口中形成阻挡钢液下流的阻挡层,防止钢液对滑板进行侵蚀,Fe-C合金所形成的阻挡层在感应加热的作用下可以全部或部分熔化来完成钢包出钢.在此基础上,发现钢包承装钢水后Fe-C合金熔化高度随时间的增加呈现先增大后保持不变的变化趋势,当钢液的温度降低时,Fe-C合金熔化高度会减小,并在相应的平衡位置保持不变.通过调节Fe-C合金成分可以调节Fe-C合金固/液界面位置,为电磁出钢系统的线圈布置、结构优化和技术开发提供参考.
The condition of Fe-C alloy after carrying molten steel was studied by means of a self-designed experimental device when Fe-C alloy was filled in the upper outlet of the electromagnetic tapping device. The experimental results show that Fe- 5 layers of liquid Fe-C alloy, solidified Fe-C alloy, liquid sintered Fe-C alloy, solid sintered Fe-C alloy and pristine loose Fe-C alloy will be formed. The solidified layer, the liquid sintered layer and the solid The sintering layer can form a barrier layer that blocks the flow of molten steel in the upper nozzle to prevent the molten steel from attacking the sliding plate. The barrier layer formed by the Fe-C alloy can be fully or partially melted under induction heating to complete the ladle tapping. On the basis of this, it is found that the melting height of Fe-C alloy increases with the increase of time after the ladle is loaded with molten steel, and keeps the same trend. When the temperature of molten steel decreases, the melting height of Fe-C alloy decreases , And remain unchanged at the corresponding equilibrium position.The position of the solid / liquid interface of the Fe-C alloy can be adjusted by adjusting the composition of the Fe-C alloy to provide reference for the coil arrangement, structure optimization and technology development of the electromagnetic tapping system.