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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 3    June 2009

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Motion behavior of non-metallic particles under high frequency magnetic field
ZHANG Zhong-tao(张忠涛)1, 2, GUO Qing-tao(郭庆涛)3, YU Feng-yun(于凤云)2,
LI Jie(李 捷)1, 2, ZHANG Jian(张 剑)1, 2, LI Ting-ju(李廷举)

1. State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian 116024, China;
2. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China;
3. Center for Computer-Aided Solidification Processing, Yonsei University Metallurgical System Engineering,
Seoul 120749, Korea

Abstract:Non-metallic particles, especially alumina, are the main inclusions in aluminum and its alloys. Numerical simulation and the corresponding experiments were carried out to study the motion behavior of alumina particles in commercial pure aluminum under high frequency magnetic field. At the meantime, multi-pipe experiment was also done to discuss the prospect of continuous elimination of non-metallic particles under high frequency magnetic field. It is shown that: 1) results of numerical simulation are in good agreement with the experimental results, which certificates the rationality of the simulation model; 2) when the intensity of high frequency magnetic field is 0.06 T, the 30 µm alumina particles in melt inner could migrate to the edge and be removed within 2 s; 3) multi-pipe elimination of alumina particles under high frequency magnetic field is also effective and has a good prospect in industrial application.

 

Key words: non-metallic particles; high frequency magnetic field; motion behavior; multi-pipe elimination

ISSN 1672-7029
CN 43-1423/U

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