航空发动机复杂薄壁件精密铸造技术研究  

Study on investment casting process of complex thin-walled casting for aeroengine

作　　者：张海龙 蒋明 赵辉 雷四雄 赵彦杰 李飞[2] 王国祥[2] ZHANG Hailong;JIANG Ming;ZHAO Hui;LEI Sixiong;ZHAO Yanjie;LI Fei;WANG Guoxiang

机构地区：[1]中国航发南方工业有限公司,湖南株洲412000 [2]上海交通大学材料科学与工程学院,上海200240

出　　处：《模具技术》2021年第6期1-7,共7页Die and Mould Technology

基　　金：某科技专项课题(编号:K19208);国家自然科学基金(52074183);“十三五”两机重大专项(项目编号:2017-VII-0008)。

摘　　要：针对某多环多支板复杂薄壁铸件在铸造过程中易出现疏松缺陷与空腔结构欠铸等问题,开展了铸件铸造工艺设计、模拟仿真和实际浇注验证等研究。结果表明:采用一种顶注、侧注和底注相结合的新型浇注系统,可有效提升铸件的充型与补缩能力,抑制了疏松缺陷的产生,实现了铸件空心支板与V形窄槽的完整成型。经实际浇注,获得了冶金质量较好的铸件样件。Aiming at the problems of loose defects and under-casting of cavity structures of the complex thin-walled casting with multi rings and struts during investment casting,we studied the casting process design and simulation,cavity structure forming method and actual investment casting verification of the casting.The results show that a novel gating system combining top pouring,side pouring and bottom pouring could effectively improve the filling and feeding capacity as well as inhibit the formation of loose defects of the casting.The complete forming of the hollow struts and V-shaped narrow grooves of the complex thin-walled casting were realized.After actual casting,a casting sample with good metallurgical quality was obtained.

关 键 词：航空发动机 镍基高温合金 复杂薄壁 熔模精密铸造 

分 类 号：TG132[一般工业技术—材料科学与工程]