圆坯电磁软接触连铸系统能耗和磁场特性的模拟  

Numerical Simulation of System Power and Characteristics of Magnetic Field in Round billet Electromagnetic Soft-Contact Continuous Casting Process

作　　者：邓安元[1] 王恩刚[1] 赫冀成[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室

出　　处：《特种铸造及有色合金》2008年第S1期535-538,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(50604005);高等学校学科创新引智计划资助(B07015);辽宁省青年人才基金资助项目(2005221004)

摘　　要：建立了电磁软接触连铸系统能耗分析模型,采用有限单元法,数值模拟了电磁软接触连铸结晶器内的磁场特性和系统功率分布,讨论了频率和线圈电流强度对磁场分布和系统功耗的影响。结果表明,在中间切缝结晶器连铸系统中有59%~65%的电能损失在了结晶器中;铸坯外表面纵向上的最大磁感应强度出现在液面以下5.5mm附近;结晶器内的磁感应强度与线圈电流成正比;在频率为10kHz^100kHz范围内,增加频率,结晶器内的磁感应强度逐渐降低;线圈电流强度不影响磁场的周向均匀性,在频率为20kHz时,磁场周向均匀性较好;系统能耗与线圈电流的平方成正比,频率增加,系统能耗显著增大,相同磁感应强度下,50kHz时所需系统功率为20kHz时的165%。对于178mm圆坯电磁软接触连铸系统,建议采用20kHz的频率。A model was developed for analyzing system power of electromagnetic soft-contact continuous casting system. Using finite element method, the system power and magnetic flux density distribution were calculated, and the effect of coil current and frequency on system power and magnetic flux density distribution were also discussed. The results show that as for electromagnetic soft-contact continuous casting system with partial-segment type mold, about 59%-65% of electric power is dissipated in the mold, and th...

关 键 词：连铸 结晶器 软接触 电磁场 能耗 磁场频率 数值模拟 

分 类 号：O242[理学—计算数学]