Effect of sample radius on stability of electromagnetic levitation melting

被引：0
|
作者：
Wei-zeng Ma
Hong-xing Zheng
Cheng-chang Ji
Jian-guo Li
机构：
[1] Shanghai Jiaotong University,School of Materials Science and Engineering
来源：
Journal of Central South University of Technology | 2004年 / 11卷
关键词：
electromagnetic levitation melting; stable levitation zone; perturbation; (TbDy)Fe; alloy; TF133; O441.3;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Based on the power dissipating model of spherical sample in free convection gas medium and the expression of input power, the model of temperature calculation for electromagnetic levitation melting sample was established. Considering the limitation of levitation force and levitation sample temperature, the principle of stability levitation zone computation was determined. A spherical sample (ThDy)Fe2 under the protection of argon gas was examined, and the effect of radius of levitation sample and perturbation on the stable levitation zone was investigated. The results show that longitudinal perturbation and transverse perturbation can shorten the length of stable levitation zone and the range of levitation sample radius. By increasing the sample radius and weakening the perturbation the electromagnetic levitation melting stability of sample can be improved.
引用
收藏
页码：31 / 35
页数：4
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