某汽车后舱一体化压铸件工艺分析及缺陷改善  

Process Analysis and Defect Improvement of Integrated Die Casting Parts for a Certain Automobile Rear Cabin

作　　者：卢灿雄 罗维 李继强 贾志欣 刘立君 吴士荣 杨斌 孙丽丽 郭涛 LU Canxiong;LUO Wei;LI Jiqiang;JIA Zhixin;LIU Lijun;WU Shirong;YANG Bin;SUN Lili;GUO Tao(School of Mechanical Engineering,Zhejiang University,Hangzhou 310058;School of Mechatronics and Energy Engineering,Ningbo Technology University,Ningbo 315100;Ningbo Tuopu Automotive Electronics Co.,Ltd.,Ningbo 315366)

机构地区：[1]浙江大学机械工程学院,杭州310058 [2]浙大宁波理工学院机电与能源工程分院,宁波315100 [3]宁波拓普汽车电子有限公司,宁波315336

出　　处：《特种铸造及有色合金》2025年第1期145-148,共4页Special Casting & Nonferrous Alloys

基　　金：2022宁波市重点研发资助项目(2022Z046);宁波企业创新联合体资助项目(2022H001)。

摘　　要：借助Flow-3D模拟软件对汽车后舱初始方案的充填过程进行分析,发现铸件U型槽区域存在卷气风险,样件力学性能检验也发现该U型槽位置力学性能不合格。进一步通过X光探伤确定该铸件U型槽区域存在气孔缺陷。为了提高铸件该区域质量,通过CAE分析优化了排溢系统。基于优化系统生产的样件的X光探伤显示该区域内部结构致密,无明显气孔缺陷,力学性能检测也表明优化方案有效地提高了U型槽处力学性能,平均伸长率提高了30%。Using Flow-3D simulation software to fill the initial solution of the product,it is found that there is a quality risk in the U-shaped groove area of the rear cabin castings.Mechanical performance experiments show that the mechanical properties at the U-shaped groove position are unqualified.Further X-ray inspection was conducted to con⁃firm the presence of porosity defects in the U-shaped groove area of the casting.In order to improve the quality in the area of the casting,the overflow system was optimized.The X-ray inspection results based on products by optimized system reveal that the internal structure of the area is dense without obvious porosity defects.Mechanical experiments show that the optimization scheme effectively improve the mechanical properties of the U-shaped groove,and the aver⁃age elongation is increased by 30%.

关 键 词：汽车后舱 压铸 缺陷分析 一体化 

分 类 号：TG249.2[金属学及工艺—铸造]