在不考虑杂质元素的情况下研究了含铝45wt%的铝硅合金熔体电磁分离过程中电流频率、下拉速度、保温温度及坩埚材质对初晶硅相分离效果的影响. 结果表明，在电流频率3 kHz、保温温度1000℃、下拉速度10 ?m/s的条件下，以石墨坩埚为容器，可使合金的硅铝质量比降至0.0939. 保温温度对合金中硅的去除影响最大，相同条件下1500℃时合金硅铝质量比为0.11439；低频交变电流能强化电磁搅拌从而加强传质，降低下拉速度对降低合金中硅含量有一定作用，且可使分离界面更平坦.
The effects of current frequency, pull-down velocity, holding temperature and crucible materials on the separation efficiency of Al?Si alloy with 45wt% Al were studied which the impurity elements were not considered. The results showed that the mass ratio of silicon to aluminum reduced 0.0939 by using graphite crucible as the container under the conditions of current frequency of 3 kHz, holding-temperature of 1000℃ and pull-down velocity of 10 ?m/s. Holding-temperature had the biggest effect on the removal of silicon in the alloy, under the same conditions, the mass ratio of Si to Al in alloy was 0.11439 at 1500℃. The low frequency alternating current strengthens the electromagnetic stirring to enhance the mass transfer. Reducing the pull-down velocity had an effect on reducing the silicon content in the alloy and can make the separation interface more flat.
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