调压铸造中铝液真空除气的热力学和动力学分析  

Analysis on Thermodynamics and Kinetics of Vacuum Degassing from Aluminum Melt during Adjusted Pressure Casting

作　　者：戴锐锋[1] 王猛 谢学竞[1] 黄卫东[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《铸造技术》2009年第1期41-43,共3页Foundry Technology

摘　　要：从热力学角度对调压铸造中的铝液真空除气过程进行了分析,并对真空除气动力学环节进行分析,推导出铝液平均氢浓度与真空处理时间的数学模型,为调压铸造真空除气的压力规范设计提供了参照依据。The thermodynamics and kinetics of the hydrogen removal from aluminum melt under vacuum degassing of adjusted pressure casting were investigated, a mathematical model of the relation between the vacuum degassing time and the average hydrogen concentration was established, which provides references for the design of the pressure curve parameters during adjusted pressure casting.

关 键 词：调压铸造 真空除气 铝合金 

分 类 号：TG27[金属学及工艺—铸造]