| Mathematical model of electromagnetic elimination in tubule with high frequency magnetic field |
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| 作者姓名： | 郭庆涛 金俊泽 李廷举 王同敏 张琦 曹志强 |
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| 作者单位： | State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China |
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| 基金项目： | Projects （50474055; 50274018） supported by the National Natural Science Foundation of China; project （20052176） supported by the Natural Science Foundation of Liaoning, China |
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| 摘 要： | In order to find the ways to improve the elimination efficiency with high frequency magnetic field, a mathematical model of electromagnetic elimination （EME） in the tubule with high frequency magnetic field was set up. The calculated results show that by ignoring the flow of molten metal, when the surface magnetic induction intensity of the metal （B0） is 0.03 T and the diameter of the tubule is 8 mm, the non-metallic inclusions with 30 μm diameter can be wiped offin 7 s from the center of the molten aluminum, whereas the elimination time of the 5 μm non-metallic inclusions is more than 240 s. When B0 is 0.03 T, the diameter of the tubule is 8 mm and elimination time is more than 30 s, the elimination efficiency of 5μm, 10μm and 30 μm non-metallic inclusions is about 60%, 90% and 100%, respectively, the elimination efficiency increases with the decreasing diameter of the tubule. It can be concluded that increasing the magnetic induction intensity or decreasing the diameter of the tubule can decrease the elimination time and improve the elimination efficiency in EME with high frequency magnetic field.
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| 关 键 词： | 电磁消除 管道消磁 高频磁场 数学模型 非金属包含体 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-04-25 |
Mathematical model of electromagnetic elimination in tubule with high frequency magnetic field |
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| GUO Qing-tao, JIN Jun-ze, LI Ting-ju, WANG Tong-min, ZHANG Qi, CAO Zhi-qiang.Mathematical model of electromagnetic elimination in tubule with high frequency magnetic field[J].Transactions of Nonferrous Metals Society of China,2006,16(B01):47-51. |
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| Authors: | GUO Qing-tao JIN Jun-ze LI Ting-ju WANG Tong-min ZHANG Qi CAO Zhi-qiang |
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| Affiliation: | State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China;Zhejiang Provincial Key Lab of Modern Textile Machinery, School of Mechanical Engineering, Zhejiang Sci-Tech University, Hang Zhou, PR China |
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| Abstract: | In order to find the ways to improve the elimination efficiency with high frequency magnetic field, a mathematical model of electromagnetic elimination (EME) in the tubule with high frequency magnetic field was set up. The calculated results show that by ignoring the flow of molten metal, when the surface magnetic induction intensity of the metal (B0) is 0.03 T and the diameter of the tubule is 8 mm, the non-metallic inclusions with 30 μm diameter can be wiped off in 7 s from the center of the molten aluminum, whereas the elimination time of the 5 μm non-metallic inclusions is more than 240 s. When B0 is 0.03 T, the diameter of the tubule is 8 mm and elimination time is more than 30 s, the elimination efficiency of 5μm, 10 μm and 30 μm non-metallic inclusions is about 60%, 90% and 100%, respectively, the elimination efficiency increases with the decreasing diameter of the tubule. It can be concluded that increasing the magnetic induction intensity or decreasing the diameter of the tubule can decrease the elimination time and improve the elimination efficiency in EME with high frequency magnetic field. |
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| Keywords: | electromagnetic elimination non-metallic inclusions elimination time elimination efficiency |
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