真空浇注对充型过程的作用及其在快速铸造中的应用  

Effect of Vacuum Pouring on Filling Process of Liquid Metal & Its Application in Rapid Casting Process

作　　者：李亚敏[1] 刘洪军[1] 郝远[1] 

机构地区：[1]兰州理工大学有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《热加工工艺》2007年第17期35-37,共3页Hot Working Technology

基　　金：兰州市科技计划项目(05-1-13)

摘　　要：液态金属铸造过程中施加真空是提高复杂铸件充型性能的有效措施。通过分析真空对充型过程的作用机理,认为真空可以有效减少型腔中的气体反压力,从而达到改善充型性能的目的。采用了真空浇注工艺,开发了真空浇注设备。将此设备应用于复杂薄壁铸件的快速铸造中,由于金属熔化后可以在真空环境中进行浇注和充型凝固,取得了良好的效果。The application of vacuum in casting process was an effective method to improve filimg ability of complicated casting. The effect mechanism of vacuum on the filling process was discussed. It shows that the vacuum can reduce the gas counterpressure in the casting mould cavity and improve the filling ability. Using the vacuum pouring process , the vacuum pouring equipment was developed. The equipment is applied to the rapid casting process of thin-walled complicated casting, because the liquid metal can pour and fill under the vacuum condition, the casting can be filled completely.

关 键 词：真空 充型 真空浇注 快速铸造 

分 类 号：TG249.9[金属学及工艺—铸造]