小方坯凝固末端电磁搅拌的磁场数值模拟

钢铁研究学报, 2008, 20(12): 18-0.

小方坯凝固末端电磁搅拌的磁场数值模拟

1.1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

2.2. Yueyang Tianli Electromagnet Co Ltd, Yueyang 414000, Hunan, China

3. 3. No2 Steelmaking Plant, Shougang Co Ltd, Beijing 100041, China

关键词：小方坯;凝固末端电磁搅拌;磁感应强度

Magnetic Field Numerical Simulation of FEMS in Billet Continuous Casting

LIN Shuncai , CHEN Weiqing , ZHANG Senlin , WANG Guolian , GONG Jian , GAO Wei

Keywords： billet;FEMS;magnetic induction intensity

利用ANSYS软件对160 mm×160 mm小方坯凝固末端电磁搅拌器所产生的电磁场分布进行了模拟。计算了小方坯内部磁场分布情况，同时计算出在不同搅拌电流条件下的铸坯凝固末端凝固前沿钢液液芯所受的电磁力与钢液的转速。结果表明，铸坯凝固前沿磁感应强度、电磁力及钢液转速均随着搅拌电流的增加而增大。结合实际生产情况，确定凝固末端液芯半径为175 mm，电磁搅拌频率为6 Hz时，最佳搅拌电流为400 A，此状态下凝固前沿由电磁力引起的钢液最大转速为12 r/s。

The distribution of electromagnetic fields of FEMS was simulated by ANSYS 100 software. The magnetic field in billet were analyzed by this software, then the electromagnetic force and the flow velocity of molten steel in billet at location of FEMS with various stirring current were calculated. The results showed that the magnetic induction intensity, electromagnetic force and flow velocity of molten steel at the solidification front of billet increased with increasing the stirring current. When the liquid core radius of solidification end in billet is 175 mm and the FEMS frequency is 6 Hz, the optimum current of the FEMS is 400 A, under this condition, the maximum flow velocity of molten steel at the solidification front which was caused by electromagnetic force is 12 r/s.

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