精密铸造复杂薄壁铝合金支架  

Manufacture of a Typical Complex Thin-walled Aluminium Alloy Bracket

作　　者：郑卫东[1,2] 潘俊杰[1,2] 黄永庆[1,2] 何茂领 王海龙[1,2] 王卫凯[1,2] 

机构地区：[1]中国航发北京航空材料研究院 [2]北京市先进铝合金材料及应用工程技术研究中心

出　　处：《特种铸造及有色合金》2017年第5期512-514,共3页Special Casting & Nonferrous Alloys

摘　　要：某典型复杂薄壁铝合金支架铸件采用ZL114A合金,基于支架铸件结构形状与铸造工艺难点分析,试验设计了熔模与石膏型复合型壳结合低压铸造成形工艺进行生产。结果表明,通过在铸件薄壁区域增设加强筋与排气条、优化低压充型及T6热处理参数,有效解决了薄壁支架铸件的浇不足、缩松等缺陷,生产出了高性能的合格铸件。A typical thin-walled complex bracket was produced with ZL114 Acasting alloy.Based on analysis of structure shape and casting difficulties of the bracket,composite investment shell mold and gypsum mold combined with low-pressure casting process was designed.The results reveal that by adding the enhanced rib and exhausted slot in thin-walled location of the bracket to optimizing parameters of low-pressure casting and T6 heat-treatment,misrun and shrinkage porosities in bracket can be elininated successfully,and the qualified bracket is produced successfully.

关 键 词：反重力铸造 低压铸造 薄壁铸件 铝合金 

分 类 号：TG249.5[机械工程—精密仪器及机械] TG146.21[金属学及工艺—铸造]