一种ZL114A薄壁锥壳铸件的铸造工艺研究  

Research on the Casting Process of a ZL114A High Strength Aluminum Alloy Thin Wall Conical Shell Casting

作　　者：邵啊新 李乐意 蔡银枝 宁二宾 彭光辉 曹胜涛 焦燕妍 陈恒周 徐帅 SHAO A-xin;LI Le-yi;CAI Yin-zhi;NING Er-bin;PENG Guang-hui;CAO Sheng-tao;JIAO Yan-yan;CHEN Heng-zhou;XU Shuai(Luoyang Hanghui New Material Co.,Ltd.,Luoyang 471000,Henan,China)

机构地区：[1]洛阳航辉新材料有限公司,河南洛阳471000

出　　处：《铸造》2024年第4期565-570,共6页Foundry

摘　　要：某薄壁锥形壳体铸件为航空飞行器前端重要装置组件,为ZL114A高强度铝合金铸件。因产品为半封闭结构,铸造时易出现内部质量问题,为了保证产品各项指标满足要求,采用差压铸造结合计算机仿真模拟分析,开展了对该铸件的铸造工艺研究,研究过程中发现锥顶三角区域在凝固时易出现缩松缺陷,结合仿真模拟对铸件凝固成形工艺进行了浇注系统的调整、增设冷铁等改进,消除了缩松倾向,完成了生产试制。铸件内部质量满足Ⅰ类件要求,附铸试棒平均抗拉强度、屈服强度、伸长率分别为364.67 MPa、306 MPa、7.5%,满足各项技术指标要求。A thin-walled conical shell casting is an important component of the front end device of an aircraft.It is a ZL114A high-strength aluminum alloy casting.Due to the semi closed structure of the product,internal quality problems are prone to occur during casting.In order to ensure that the various indicators of the product meet the requirements,counter-pressure casting combined with computer simulation analysis was used to conduct casting process research on the casting.During the research process,it was found that the triangular area of the conical top was prone to shrinkage defects during solidification.By combining simulation,the improvements were made to the casting solidification forming process,such as adjusting the gating system and adding chills,eliminating the tendency of shrinkage porosity.Production trial production was completed,and the internal quality of the casting met the requirements of Class I parts.The average tensile strength,yield strength,and elongation of the attached cast test bars were 364.67 MPa,306 MPa,and 7.5%,respectively,meeting the requirements of various technical indicators.

关 键 词：ZL114A 铝合金铸件 锥形 薄壁壳体 计算机模拟 差压铸造 

分 类 号：TG292[金属学及工艺—铸造]