汽车用铝型材表面起鼓缺陷的模具结构优化  

Optimization of die structure against bulge defect on aluminum profile for automotive

作　　者：缪骁 王新宇[1] 庞天路 王孟君[1] 张洪亮 杨占国 MIAO Xiao;WANG Xin-yu;PANG Tian-lu;WANG Meng-jun;ZHANG Hong-liang;YANG Zhan-guo(School of Materials Science and Engineering,Central South University,Changsha 410083,China;Shandong Huajian Aluminum Group Co.,Ltd.,Linqu 262600,China)

机构地区：[1]中南大学,材料科学与工程学院,湖南长沙410083 [2]山东华建铝业集团有限公司,山东临朐262600

出　　处：《轻合金加工技术》2020年第3期43-47,共5页Light Alloy Fabrication Technology

基　　金：2018年山东西部经济隆起带和省扶贫开发重点区域人才项目;中南大学大学生创新训练项目。

摘　　要：在汽车用铝型材挤压生产中,型材表面存在起鼓缺陷,导致型材尺寸产生偏差,无法满足客户对产品的需求。针对该缺陷,利用Click2 Extrude软件,模拟某汽车用空心铝型材的挤压过程,分析金属的流速以及位移量对型材起鼓现象的影响。试模验证表明:通过对分流桥进行沉桥处理,对焊合室高度进行优化,金属在焊合室内的再分配更均匀,型材的出口流速也更均匀,型材表面起鼓现象消失。The bulge defect often exists during extrusion of automotive aluminum profiles,resulting in the profile size deviation and unable to meet customer demand for products.In view of this defect,the extrusion process of hollow aluminum profile for automobile was simulated with software Click2Extrude,and the influence of flow rate and displacement of the metal on the bulge was analyzed after that.The test results show that the distribution of metal in the welding chamber is more uniform,the exit velocity of the profile is more uniform,and the surface of the profile is no more bulging through settling the shunt bridge and optimizing the height of the welding chamber.

关 键 词：汽车用铝型材 数值模拟 起鼓 模具结构 

分 类 号：TG375.4[金属学及工艺—金属压力加工]