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

摘要：

The flow behaviors of molten Al alloy in sand mould cavity with varied gating system were simulated under vacuum counter-pressure casting and the ingate velocity was predicted using a software package. At same process conditions, the flow behaviors were investigated using electrode contact method. The comparison between the simulated results and the investigated results shows that a good agreement is achieved. The ingate flow velocity exceeding critical velocity and large velocity deviation are detected during filling mould with I types gating system, resulting in turbulent flow behavior. Whereas, flow behaviors take on stable flow pattern during filling the other mould cavity, although some differences of flow behaviors are present. The small ingate flow velocity and velocity deviation during filling mould cavity with Ⅲ type gating system may be conduce the more stable flow pattern than Ⅱ type gating system.

关键词： Gating system Flow behavior Thin wall casting Counter-pressure casting

作者: Huan Yu Bowen Xiong Qingsong Yan Zhifeng Xu Changchun Cai 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: 189-193

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）