Theoretical and experimental investigation of aluminum melt cleaning using alternating electromagnetic field

被引：32

作者：

Li, K ^{[1
]}

Wang, J ^{[1
]}

Shu, D ^{[1
]}

Li, TX ^{[1
]}

Sun, BD ^{[1
]}

Zhou, YH ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

来源：

MATERIALS LETTERS | 2002年 / 56卷 / 03期

基金：

中国国家自然科学基金;

关键词：

alternating electromagnetic field; aluminum melt; inclusion; EMS; removal efficiency;

D O I：

10.1016/S0167-577X(02)00442-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of processing variables using such as the frequency of imposed field (f), imposed magnetic flux density (B-e), processing time (t), the diameter of inclusions (d(p)) and the ratio of pipe radius to skin depth (r(1)/delta) on the electromagnetic separation (EMS) removal efficiency of inclusions from an aluminum melt were analyzed theoretically. It was found that the removal efficiency (eta) reaches a maximum while r(1)/delta ranges from 1.5 to 2. In addition, wider effective range of r(1)/delta will be obtained with larger d(p) or higher f Experimental results on aluminum melt show that higher frequency and magnetic flux density make for higher removal efficiency, matching well with the theoretical results. In the case of f = 15.6 kHz, B-e = 0.1 T and t = 10 s, more than 80% inclusion particles with 6-mum diameter can be removed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：215 / 220

页数：6

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