A Study on the Elimination of Fe Elements in Aluminum Alloy by Electromagnetic Force;Part 2. The Movement of Fe-Contained Intermetallics with Electromagnetic Force in Al-Si-Cu Scrap

전자기력을 이용한 알루미늄 스크랩 중의 Fe 제거에 관한 연구;Part 2. Al-Si-Cu계 합금 스크랩에서 전자기력에 따른 Fe계 금속간화합물의 이동양상

In the view point of the environmental conservation and the energy reduction, the recycling of metal scrap is coming as one of the global subjects in the world. In this study, the movement of intermetallics with electromagnetic force in a melt of a scrap of Al-Si-Cu alloy (JIS ADC12), which was widely used in diecasting process, was investigated in order to eliminate the Fe element, which was usually accumulated in a scrap. In this study, we applied electromagnetic method to eliminate Fe element in ADC12 aluminum alloy scrap which contains 1.64wt.% Fe and the effects of electromagnetic force on the particle movement was visualized and confirmed by water modeling and experiment. As a result, the Fe intermetallic compounds are moved to the direction opposite to that of the electromagnetic force as the force applies, thus eliminated from the bulk metal. Therefore, the content of Fe in matrix decreased from 1.64wt.% to 0.45wt.%.