方坯软接触结晶器三维电磁场有限元计算  

Three-Dimension Simulation of Electromagnetic Field in Soft-Contact Continuous Casting Mold by Finite Element Analysis

作　　者：邓安元[1] 贾光霖[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,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2001年第1期75-78,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金重点资助项目! (5 973 4 0 80 );国家重点基础研究发展规划项目! (G19980 615 10 )

摘　　要：运用Galerkin有限元法对方坯软接触结晶器内三维交变磁场进行了数值模拟·计算表明 :磁场主要集中在线圈和结晶器附近 ,磁感应强度在靠近线圈中心位置附近出现最大值 ,随后迅速衰减 ,但在结晶器出口处磁场又有所增强 ;空载结晶器内部的磁场分布比较均匀 ;切缝能增强结晶器内部磁场 ,减小结晶器铜壁的屏蔽 ;磁压力在周向上分布具有不均匀性 。The three dimension alternative electromagnetic field of square billet soft contact mold was simulated by using the Galerkin finite element method. The numerical results show that the magnetic field concentrates mainly near the coil and mold. Along center axis line, magnetic flux density has a maximum value at the center of coil, and vanishes rapidly as away from the coil. Magnetic flux density distributes homogeneously in empty soft contact mold. Segment slits can enhance the interior magnetic flux density of soft contact mold and decrease the electromagnetic shield of copper mold. But, the magnetic flux density in front of the slit is larger than that in front of the segment.The magnetic pressure distributes un homogeneously along the segment and the slit and this may cause surface trap in the billet.

关 键 词：方坯连铸 软接触结晶器 交变磁场 磁压力 有限元法 

分 类 号：TF341.6[冶金工程—冶金机械及自动化] TF777.2