基于PROE的铝合金型材挤压成型数值模拟及模具结构优化研究  

Study on numerical simulation of extrusion molding and structure optimization of molds of aluminum alloy profiles based on PROE

作　　者：郑有想[1] 

机构地区：[1]长江工程职业技术学院,湖北武汉430212

出　　处：《轻合金加工技术》2014年第11期38-42,63,共6页Light Alloy Fabrication Technology

基　　金：湖北省高校学生工作研究会2012-2013年度课题基金(1213D06)

摘　　要：随着铝合金大型空心截面型材的结构形状越来越复杂,以及对成形件质量、强度、寿命和可靠性的要求不断提高,传统的工艺设计方法已经不能满足其快速发展,出现了试制周期长、产品合格率不高、产品的工艺稳定性无法保证等问题。因此,采用PROE软件对某一高速列车车壁的大型空心截面型材的挤压成形工艺进行模拟仿真,并对模具型腔内铝材的变形机制和流动规律进行了系统的研究,获得了模具结构参数和工艺参数对挤压成形过程的影响规律。提出了两种优化设计方案,经过对比试验的验证表明,优化后的模具结构有效地解决了初始模具中的整体应力分布不均的问题。As the structural shape of aluminum alloy profiles with large hollow section is more and more complex and the requirement for the forming quality, strength,life and reliability is increasing,the traditional design method can not meet the rapid development. Many problems happen such as long production cycle, the low qualified rate, and the process stability without guarantee. Thus, the extrusion molding process is simulated with the PROE software for aluminum alloy profiles with large hollow section for the wall of a high-speed train. The deformation mechanism and flow laws of aluminum in the mold cavity are systematically studied. The influence of structure and process parameters on the extrusion process is gained and two optimization design schemes are put forward. After contrast tests, the results show that the optimized die structure effectively solves the problem of the uneven distribution of the overall stress in the initial die.

关 键 词：空心铝合金型材 挤压成形 模具 PROE 数值模拟 

分 类 号：TG379[金属学及工艺—金属压力加工]