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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 6    December 2002

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Separation of inclusions from aluminum melt
using alternating electromagnetic field
LI Ke(李 克), WANG Jun(王 俊),
SHU Da(疏 达), LI Tian-xiao(李天晓), 
SUN Bao-de (孙宝德), ZHOU Yao-he(周尧和)

School of Materials Science and Engineering, Shanghai Jiaotong University,
Shanghai 200030, China

Abstract:Effects of processing variables such as frequency of imposed magnetic field, imposed magnetic flux density, processing time, diameter of inclusions, and value of r1/δ on the electromagnetic separating(EMS) removal efficiency were analyzed theoretically. The higher the frequency, the wider the range of r1/δ will be. Removal efficiency reaches the maximum while r1/δ ranges from 1.5 to 2. And the experimental results on aluminum melt show that higher frequency and magnetic flux density make for higher removal efficiency, matching well with the theoretical results. When f is 15.6kHz, Be is 0.1T, and imposed time is 10s, more than 80% inclusion particles with 6μm diameter can be removed.

 

Key words:   alternating electromagnetic field; aluminum melt; inclusion; EMS; removal efficiency

ISSN 1672-7029
CN 43-1423/U

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