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| 1 | 实验室规模和工业规模电渣重熔过程中电磁行为显示文摘电渣重熔过程中电磁现象对重熔过程和铸锭的最终质量有着直接的影响。利用数值模拟的方法研究电渣重熔过程中的电磁行为(电流密度、磁场强度、电磁力和焦耳热)。利用文献实测磁场强度验证模型,模拟结果与测量的电渣重熔渣池内的磁场强度吻合良好。研究结果表明:在工业规模电渣重熔过程中,电流的集肤效应更为明显;随着电流频率的增加,靠近电极外表面的电流密度增加;在此基础上,进一步分析实验室规模电渣重熔和工业规模电渣重熔过程的电流密度、磁场强度、电磁力和焦耳热的分布特征。 | 刘福斌 李永旺 姜周华 李花兵 耿鑫 陈旭 | 2015 | 中南大学学报(自然科学版)2015，46，10： | 3 |
| 2 | An 2d Analysis of Electromagnetic and Joule Heating Distribution in Electro-Slag Remelting Process显示文摘Electro-Slag Remelting(ESR)is a commonly used for the production of high-value-added alloys such as superalloys and specialty steels.In consideration of high trial costs and the complexity of the process,a steady-state numerical model has been developed that accounts for electromagnetic phenomena and coupled heat in an axisymmetrical geometry.The model considers electromagnetic effects and heat transfer.First of all,Maxwell equations are solved to determine the magnetic flux density,current density and Joule heating.Especially,the skin effect is shown and discussed based on numerical results.It is shown that the current density distribution on the external surfaces of slag and ingot.In slag,due to the low electrical conductivity of slag,the current distribution changes,gathering on the end of electrode.Next,Joule heating distribution is calculated by the Joule law.Joule heating is mainly in the slag,because the electrical conductivity in the slag is much lower than that in the electrode and the ingot.The maximum joule heating is below the interface of electrode and slag. | ZHANG Wei-jun WANG Zi-kun WANG Bo WANG Fang LI Rui-nan | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 0 |
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