脉冲进气精炼铝合金熔体的水力模拟研究  

Study on Aluminum Alloy Melt Degassing with Pulse Gas Current by Water Simulated Test

作　　者：蒋海燕[1] 孙宝德[1] 倪红军[1] 丁文江[1] 

机构地区：[1]上海交通大学材料科学与工程学院

出　　处：《铸造》2001年第8期470-472,共3页Foundry

基　　金：国家重点研究开发规划 (973)项目 (G19990 6490 0 ) ;中国博士后科学基金 ;上海市博士后基金

摘　　要：本文将带气体动力脉冲器的转头应用于铝合金熔体净化旋转喷吹技术当中 ,并通过水力模拟实验 ,研究了脉冲进气方式对气泡大小的影响。结果表明 :带气体动力脉冲器的转头可以产生强烈的脉冲射流 ,在相同的气体流量和转头转速等条件下 ,脉冲射流比连续射流更容易得到小尺寸气泡 ,更有利于氢的排除。In this paper, a new kind of rotating impeller which could produce pulse gas current has been used in the technology of rotating impeller degassing of aluminum alloy melt, and the effect of pulse gas current on the gas bubble size has been studied with the simulated test in water. The results show that violent pulse gas current could be generated by using this kind of impeller, and compared with the constant current, the pulse gas current is advantageous to decreasing the gas bubble size, so that the degassing result is improved.

关 键 词：脉冲气流 旋转喷吹 铝合金 水力模拟 除气 精炼 熔体净化 

分 类 号：TG292[金属学及工艺—铸造]