电磁作用下铝熔体中产生涡流的影响因素  

Factors Affecting Whirlpool in the Molten Aluminum Under Electromagnetic Field

作　　者：王娉[1] 孙中祺[1] 姚广春[1] 

机构地区：[1]东北大学材料电磁过程教育部重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2002年第7期660-662,共3页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目 (5 97740 17)

摘　　要：在电磁分离铝熔体杂质的过程中易产生涡流·涡流的产生会降低分离杂质效果·为了抑制涡流 ,提高杂质分离效果 ,在不同磁感应强度 ,不同的分离器与磁场相对位置 ,不同感生电流密度等条件下进行实验 ,观测铝熔体表面状态·实验结果表明 ,铝熔体中产生的涡流随磁场强度增大而剧烈 ;随铝熔体表面与磁极表面垂直距离的减小而增强 ;Whirlpool in the process of separating impurities of molten aluminum by introducing an electromagnetic field molten aluminum. The experiments were carried out under conditions of different magnetic field intensities,different relative position of the separator with magnetic field and fifferent induced current densities by observing the surface whirlpool change of the molten aluminum. It is shown that the force is different in the different part of molten aluminum because of asymmetry of distribution and direction change of altering magnetic field,asymmetry of density and direction change of induced current in the molten aluminun. The experiments results also showed that the whirlpool is more intensile with shortening vertical distance between the surface of molten aluminum and the magnetic pole surface and with increasing the density of induced horizontal current. The whirlpool can be restrained by adjusting the construction of the separator and by configuring the electromagnetic field.

关 键 词：交变磁场 铝溶体 感生电流 分离杂质 涡流 

分 类 号：TF777[冶金工程—钢铁冶金]