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探讨了熔剂过滤净化工业纯铝的效果及其净化机理。结果表明 :合适的熔剂组成及处理工艺是保证其具有高效排杂作用的关键 ;采用特定的熔剂 (CJ 5 )和过滤工艺 ,在适当的加入量 (3% )和熔炼温度 (72 0℃ )条件下 ,对不同品位纯铝的除杂率和针孔率降低幅度分别可达 70 %～ 82 %和 6 0 %～ 88% ,显著提高了材料的强度和塑性 ,尤其是塑性可提高约 70 % ;其高效排杂作用的关键在于该方法具有将铝的熔化—熔剂过滤—熔剂吸杂溶杂三个过程实现于熔炼全过程中的独特性 ,符合以排杂为主的净化原则 ,充分发挥了熔剂排杂净化效率。
The effects of flux filtration on purification of industrial pure aluminum and its purification mechanism were discussed. The results show that proper flux composition and processing technology are the key factors to ensure high efficiency of miscibility. With proper flux (3%) and smelting temperature (72 0 ℃) Under the conditions of different grade of pure aluminum removal rate and pinhole porosity reduction rate of up to 70% to 82% and 60% to 88%, significantly improving the strength and plasticity of the material, in particular plastic can be increased by about 70 %; The key to efficient removal of impurities is that the method has the uniqueness of the three processes of aluminum melting-flux filtration-flux gettering and solvating in the whole melting process, in line with the principle of purifying impurities mainly Played the flux cleaning efficiency.