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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 3    June 2001

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Calculation of power consumption
and induced heat for EMC aluminum ingots
CAO Zhi-qiang(曹志强), ZHANG Xing-guo(张兴国),
LI Zhao-xia(李朝霞), JIN Jun-ze(金俊泽)

Research Center of Foundry Engineering,
Dalian University of Technology, Dalian 116024, P.R.China

Abstract:The electrical parameters and power consumption in electromagnetic casting of aluminum ingots were calculated and discussed in detail. Moreover, the induced heat was calculated with the eddy current within the liquid column. It is found that the calculated values agree with the measured results. Once the inductor current was given, the magnetic flux density in electromagnetic casting could be calculated and the electromagnetic pressure could be obtained. The key to the EMC is the balance between the electromagnetic pressure and the metallostatic pressure. As the liquid column,  controlled by the casting speed and pouring speed through a magnetic sensor, is kept away from the inductor, a gap forms linear relationship between the inductor and ingot. The bigger the current is, the smaller the ingot size is.

 

Key words:   electromagnetic casting; electromagnetic pressure; induced heat; power consumption

ISSN 1672-7029
CN 43-1423/U

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