Effects of Filling Pressure on the Flow Behaviors during Vacuum Counter-pressure Casting Thin Wall Aluminum Alloy

摘要：

The flow behaviors under different filling pressures were observed using electrode contact method. The relationships of recorded time and related point location were analyzed and deduced in terms of the flow tendency. The flow behavior figures were plotted at different time according the relationship. It was found that the unstable flow pattern takes place because filling cross-sectional area changes abruptly from the flow behavior figures. According to energy conservation and mass conservation theory, the relationship of flow velocity and filling pressure was established. Combining this relationship and critical flow velocity, the judgment equation of critical filling pressure was achieved.

关键词： Counter-pressure casting Wall thickness Filling pressure Flow behaviors

作者: Bowen Xiong Huan Yu Qingsong Yan Zhifeng Xu Changchun Cai Baiping Lu Guofeng Liu

作者单位: National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 185-188

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）