复杂多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 for complex multi-cavity aluminum profile

作　　者：吉宏选 张静文 牛婧捷 JI Hong-xuan;ZHANG Jing-wen;NIU Jing-jie(Jiangyin Giansun Technology Co.,Ltd.,Wuxi,Jiangsu 214400,China;Hefei University of Technology,Hefei,Anhui 230000,China;ZhangJi Middle School,Huaibei,Anhui 23500,China)

机构地区：[1]江苏江顺精密科技集团有限公司,江苏无锡214400 [2]合肥工业大学,安徽合肥230000 [3]张集中学,安徽淮北235000

出　　处：《模具工业》2020年第3期51-55,共5页Die & Mould Industry

摘　　要：针对某复杂多腔铝型材,基于塑性成型理论设计挤压工艺与模具结构,并利用数值模拟技术分析验证方案的可行性。根据模拟结果,优化设计模具桥位、分流孔,合理设置阻流块以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降至30.8 mm/s,降低了59.7%。实践应用结果表明:数值模拟与试模试验相符,根据改进方案优化模具结构可以缩短模具设计和制造周期,减少试模次数,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, the 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 profile section. After several improvements, the velocity difference on the section of profiles was reduced from 76.4 mm/s to30.8 mm/s, a decrease of 59.7%. The practical application results showed that the numerical simulation was in accordance with the die trial results. Optimizing the die structure according to the improved scheme could shorten the design and manufacturing cycle of the dies.

关 键 词：复杂多腔 铝型材 挤压工艺 模具设计 数值模拟 

分 类 号：TG376.1[金属学及工艺—金属压力加工]