复杂多空腔铝型材挤压过程数值模拟与模具设计优化的实践应用  

Practical Application of Numerical Simulation for Extrusion Process and Die Design Optimization of a Complex Multi-cavity Aluminum Profile

作　　者：吉宏选 JI Hong-xuan(Anhui Shengxin Aluminum Co.,Ltd.,Xuancheng 242000,China)

机构地区：[1]安徽生信铝业股份有限公司

出　　处：《铝加工》2020年第1期61-64,共4页Aluminium Fabrication

摘　　要：针对某复杂多空腔铝型材,基于塑性成型理论设计了挤压工艺和模具结构,并利用有限元分析方法验证了方案的可行性。根据模拟结果,优化设计模具桥位、分流孔,合理设置阻流块,最终保证了平衡挤出型材截面各部分的速度均匀性。经过多次改进,型材截面上的速度差值由76.4 mm/s降低至30.8 mm/s,降低59.7%。实践应用结果表明:数值模拟与试模试验吻合。根据改进方案优化模具结构可以缩短模具设计、制造周期,减少试模次数,大幅度降低新产品开发成本,提高铝型材生产的经济效益。For a complex multi-cavity aluminum profile,extrusion process and die structure were designed based on plastic forming theory,and the feasibility of the scheme was verified by finite element analysis.According to the simulation results,the bridge position and portholes of the die were optimized,and the baffle plates were set reasonably to balance the velocity uniformity of each part of the extruded profile.After several improvements,the velocity difference on the profiles was reduced from 76.4 mm/s to 30.8 mm/s,re⁃duced by 59.7%.The practical application results show that the numerical simulation is in accordance with the die trial results.Opti⁃mizing the die structure according to the improved scheme can shorten the design and manufacturing cycle of the dies,greatly reduce the cost of new product development,and improve the economic benefits of the production of aluminium profiles.

关 键 词：复杂多空腔铝型材 挤压工艺 模具设计 数值模拟 

分 类 号：TG375.41[金属学及工艺—金属压力加工] TP391.99[自动化与计算机技术—计算机应用技术]