基于有限元的电池盒铝型材挤压模具结构优化  

Optimization of extrusion die for aluminum profile product of battery box based on finite element method

作　　者：叶璋 王凯阳 茹中赟 张亦杰 王婧 YE Zhang;WANG Kaiyang;RU Zhongyun;ZHANG Yijie;WANG Jing

机构地区：[1]栋梁铝业有限公司新材料研究院,浙江湖州313000

出　　处：《模具技术》2022年第6期26-31,共6页Die and Mould Technology

摘　　要：针对复杂结构电池盒铝合金型材在挤压过程中发生的明显翘曲变形问题,使用有限元软件对该型材的热挤压过程进行了数值模拟。基于型材挤压过程中的型材截面速度分布,分析了翘曲变形产生的原因,并提出相应的分流孔、阻流块和工作带的优化解决方案。模拟结果表明:型材各部位挤出速度的差异性是影响整体结构翘曲变形的关键因素;通过将模具的相对出口速度差异控制在±5%以内,可实现零件的整体均匀变形,有效地避免产品的结构变形问题;模拟结果应用到模具的挤压生产,型材零件未产生翘曲变形,平面度检验合格,表明基于截面挤出速度的优化解决方案对于实际生产具有重要的指导意义。To avoid severe warpage deformation of the 6061 battery box aluminum alloy profile, in present study, finite element software was employed to numerically model the process of hot extrusion. Based on the cross-sectional velocity distribution, we analyzed the reason resulting in the warpage deformation and found out the potential solutions including the modification of the manifold holes, flow block, and working belt. The simulation results showed that after modification, the relative exit velocity difference of the optimized die could be controlled to less than 5%, and the uniform deformation was obtained as well, which effectively avoided the warpage deformation. The application of these modifications into the production line indicates that the profile did not produce warpage deformation and both the flatness inspection and the quality of the profile were improved significantly and met the product requirements, which confirms that the simulation results were accurate and could be used for the instruction of the die design.

关 键 词：热挤压 铝合金型材 电池盒 模具结构优化 有限元仿真 

分 类 号：TG372[金属学及工艺—金属压力加工]