新能源汽车底盘副车架一体化压铸技术研发与应用  

Research and Application of Integrated Die-Casting Technology for New Energy Vehicle Chassis Subframe

作　　者：夏天[1] 吴时雨 XIA Tian;WU Shi-yu(Ningbo Polytechnic,Ningbo 315800,Zhejiang,China;Ningbo Ruili Machinery Co.,Ltd.,Ningbo 315800,Zhejiang,China)

机构地区：[1]宁波职业技术学院,浙江宁波315800 [2]宁波瑞立机械有限公司,浙江宁波315800

出　　处：《铸造》2024年第12期1751-1756,共6页Foundry

基　　金：2022年度北仑区科技创新团队项目(2022BL0008)。

摘　　要：新能源汽车底盘副车架尺寸大,结构复杂,力学性能要求高,常规一体化压铸工艺无法满足设计要求。采用三级抽真空技术,提高了模具型腔的真空度,真空度达到≤15 kPa;采用集群局部挤压技术,改善了区域组织结构,有效缩减了缩孔,减少了气孔。生产实践证明,两种技术的应用使压铸件的力学性能达到了设计要求,提升了压铸件品质,提高了生产效率,产品合格率达到95%以上。The chassis subframe of new energy vehicles has a large size,complex structure and high mechanical performance requirements.The conventional integrated die-casting process cannot meet the design requirements.Three stage vacuum pumping technology improved the vacuum degree of the mold cavity.The use of cluster local extrusion technology has improved the regional organizational structure,effectively reduced shrinkage and porosity.Production practice certificated that the application of two technologies has improved the quality of the die castings,improved production efficiency,and achieved a product qualification rate of over 95%.

关 键 词：汽车底盘副车架 一体化压铸 三级抽真空 局部挤压 

分 类 号：TG249.2[金属学及工艺—铸造]