Removing Inclusions from Molten Aluminum Alloy by Rotating Magnetic Field
The effects of rotating magnetic field(RMF) on the removing inclusions in the molten aluminum alloy were investigated.The primary silicon particles precipitating from the solidification of Al-Si hypereutectic alloy was regarded as inclusions.An experimental apparatus applied with RMF was employed to study the distribution of silicon particle with density larger than its surrounding molten aluminum alloy under magnetic field.The macrostructure and microstructure of the solidified samples was observed by digital camera and optical microscopy,respectively.The results show that the silicon particles from the molten alloy can be eliminated by RMF.The separating effect of RMF increases with the increase of RMF frequency.RMF can provide a highly effective approach for metal purification.