铝合金电池壳反挤压凸模偏心状态对成形过程的影响  

Influence of backward extrusion punch eccentric state on forming process of aluminum alloy battery shell

作　　者：张建波 蒋鹏 李恒佰 陈浩 陈利广 刘威 ZHANG Jian-bo;JIANG Peng;LI Heng-bai;CHEN Hao;CHEN Li-guang;LIU Wei(Beijing Research Institute of Mechanical&Electrical Technology,Beijing 100083,China;Haian Beijing Research Institute of Mechanical&Electrical Technology Forging Industry R&D Center,Nantong,Jiangsu 226600,China;SAIC GM Wuling Automobile Co.,Ltd.,Liu-zhou,Guagnxi 545007,China;Zhengzhou Guangyuan Battery Materials Co.,Ltd.,Zheng-zhou,Henan 450041,China)

机构地区：[1]北京机电研究所有限公司,北京100083 [2]海安北京机电研究所锻压产业研发中心,江苏南通226600 [3]上汽通用五菱汽车股份有限公司,广西柳州545007 [4]郑州广源电池材料有限公司,河南郑州450041

出　　处：《模具工业》2021年第8期9-13,共5页Die & Mould Industry

基　　金：广西创新驱动发展专项课题项目(桂科AA18118040);柳州市科技计划课题项目(2018AD50301)。

摘　　要：矩盒形铝合金电池壳一般采用4道拉深+1道变薄拉深的工艺成形,工序多且模具调试困难,现采用单次挤压工艺对不同的凸模偏心量的成形过程进行数值模拟,分析不同偏心状态下得到的成形件形状和尺寸及成形过程中的应力场、速度场、应变场,以期达到提高效率、缩短流程、降低制造成本的目的。试验表明,模拟结果与实际成形过程吻合度较高。Aluminum alloy rectangular box battery case was usually formed by four common draw⁃ing process and one thinning drawing process.The processes was complex and the die was diffi⁃cult to debug.So,the numerical simulation of extrusion forming process under different punch ec⁃centricity was presented,and the shape and size of the forming parts,the stress field,velocity field and strain field in forming process were analyzed,which was to improve efficiency,shorten the process and reduce cost.The results showed that the simulation results were in good agreement with the actual forming process.

关 键 词：铝合金电池壳 反挤压 数值模拟 壁厚差 凸模偏心 

分 类 号：TG376.5[金属学及工艺—金属压力加工]