低压铸造铝合金后副车架结构设计与工艺开发  

Structure Design and Process Development of Low Pressure Casting Aluminum Alloy Rear Subframe

作　　者：石建 李云翔 苏为强 孙乃一 柳建国[2] SHI Jian;Li Yunxiang;SU Weiqiang;SUN Naiyi;LIU Jianguo(Hubei Hangte Equipment Manufacturing Co.,Ltd.,Jingmen 448000,Hubei China;China Foundry Association,Beijing 100044,China)

机构地区：[1]湖北航特装备制造股份有限公司,湖北荆门448000 [2]中国铸造协会,北京100044

出　　处：《铸造工程》2024年第S01期1-6,共6页Foundry Engineering

摘　　要：介绍了某车型低压铸造铝合金后副车架轻量化设计及工艺开发过程。首先依据客户输入的硬点坐标、环境数据及边界间隙设计产品外形,并对结构进行拓普优化轻量化设计,通过产品的疲劳、耐久性、强度、刚度及模态等仿真分析,使产品结构和性能满足设计要求;同时结合产品结构和低压铸造工艺要求,基于分型面和起模斜度的确定、增加内芯定位点和排砂口以及优化合金成分和热处理等措施,设计浇注系统和工艺方案,再对铸件充型和凝固过程模拟分析进一步优化方案,经试制铸件结构和性能均满足要求。This paper introduces the lightweight design and technology development of the rear subframe of a low-pressure cast aluminum alloy.First of all,the product shape is designed according to the hard point coordinates,environmental data and boundary clearance input from the customer,and the structure is optimized and lightweight design is carried out.Through the simulation analysis of fatigue,durability,strength,stiffness and mode of the product,the product structure and performance meet the design requirements;At the same time,combined with the product structure and low pressure casting process requirements,based on the determination of parting surface and mold inclination,increase of inner core positioning point and sand discharge,optimization of alloy composition and heat treatment measures,the pouring system and process plan were designed,and then the mold filling and solidification simulation analysis of the casting was further optimized.The structure and performance of the trial-produced casting met the requirements.

关 键 词：低压铸造 铝合金 后副车架 轻量化设计 模拟分析 

分 类 号：TG249.2[金属学及工艺—铸造]