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以某厂圆坯凝固末端电磁搅拌器为研究对象,建立了圆坯凝固末端电磁搅拌的三维数学模型。利用有限元软件ANSYS对电磁场的分布规律进行了数值模拟,研究了不同工艺参数对磁感应强度和电磁力分布规律的影响。研究结果表明:当电流频率为8 Hz,电流强度从100 A增加到400 A时,搅拌器中心处的磁感应强度从19.5 m T提高到77.9 m T,中心横截面上切向电磁力的最大值从115 N/m~3提高到1 837 N/m~3。当电流强度为300 A,电流频率从4 Hz增加到12 Hz时,搅拌器中心处的磁感应强度从60.3 m T下降到55.6 m T,中心横截面上切向电磁力的最大值从550.2 N/m3提高到1 501.8 N/m~3。
Taking a factory round billet solidification end electromagnetic stirrer as the research object, a three-dimensional mathematical model of the electromagnetic stirring of the round billet solidification end was established. The finite element software ANSYS was used to simulate the distribution of the electromagnetic field. The influence of different process parameters on the magnetic induction intensity and electromagnetic force distribution was studied. The results show that when the current frequency is 8 Hz and the amperage increases from 100 A to 400 A, the magnetic induction intensity at the agitator center increases from 19.5 mT to 77.9 mT. The maximum value of the tangential electromagnetic force in the center cross section From 115 N / m ~ 3 to 1837 N / m ~ 3. When the current intensity is 300 A and the current frequency is increased from 4 Hz to 12 Hz, the magnetic induction intensity at the center of the agitator decreases from 60.3 mT to 55.6 mT, and the maximum value of the tangential electromagnetic force on the central cross-section decreases from 550.2 N / m3 to 1 501.8 N / m ~ 3.