(1.福州大學 機械工程系， 福州 350002；
2.福州大學 材料科學與工程學院， 福州 350002)
摘 要: 探討了熔劑過濾凈化工業(yè)純鋁的效果及其凈化機理。結果表明：合適的熔劑組成及處理工藝是保證其具有高效排雜作用的關鍵；采用特定的熔劑(CJ-5)和過濾工藝，在適當的加入量(3%)和熔煉溫度(720 ℃)條件下 對不同品位純鋁的除雜率和針孔率降低幅度分別可達70%～82%和60%～88%，顯著提高了材料的強度和塑性，尤其是塑性可提高約70%；其高效排雜作用的關鍵在于該方法具有將鋁的熔化熔劑過濾 熔劑吸雜溶雜三個過程實現(xiàn)于熔煉全過程中的獨特性，符合以排雜為主的凈化原則，充分發(fā)揮了熔劑排雜凈化效率。
關鍵字: 工業(yè)純鋁； 凈化； 熔劑； 過濾； 夾雜物
with high-efficient flux for removing inclusions
（1. Department of Mechanical Engineering,
Fuzhou University, Fuzhou 350002, P.R.China;
2. College of Materials Science and Engineering,
Fuzhou University, Fuzhou 350002, P.R.China）
Abstract:The purification of commercial aluminum by filtrating with high-efficient flux for removing inclusions and its mechanism were studied. It is found that combining reasonable flux components with purification technology is the key to ensuring its effect of removing inclusions high-efficiently from molten aluminum. With special flux (CJ-5) and filtration technology, and proper addition amount (3%) and melting temperature (720 ℃), the rate of removing inclusions and the extent of lowering porosity for different grades commercial aluminum could amount to about 70％～82% and 60％～88% respectively, and the mechanical properties of this material were improved remarkably, especially the relative increase of elongation (δ) was about 70% in comparison to that of no filtration. The main reason of removing inclusions high-efficiently for this method is that it can make three processes melting, flux filtration and adsorbing inclusions with activated flux be fulfilled simultaneously in the whole course of melting of aluminum, which accords with the purification principle that more attention should be firstly paid on removing inclusions, thus giving full play to the purification efficiency of the flux.
Key words: commercial aluminum; purification; flux; filtration; inclusions
