焊合室高度对分流组合模挤压成形过程的影响  

Effects of Height of Welding Chamber Heights on Extrusion Forming Process of Porthole Die

作　　者：程磊[1] 谢水生[1] 黄国杰[1] 和优锋[1] 

机构地区：[1]北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京100088

出　　处：《稀有金属》2008年第4期442-446,共5页Chinese Journal of Rare Metals

基　　金：国家自然科学基金资助项目(50674017)

摘　　要：基于刚粘塑性有限元理论,采用DEFORM-3D有限元商业软件,对3种不同焊合室高度下的薄壁多孔口琴管挤压过程进行数值模拟。重点研究了不同焊合室高度对金属的流动规律、型材的出口流速均方差、挤压力、焊合压力,以及金属应变场的影响规律,从而为合理的设计模具提供了有效的理论指导。In this study, according to the rigid-viscoplasticity finite element method, the porthole die extrusion process of an aluminum harmonica-shaped tube in the welding chambers with different heights was simulated using Deform-3D commercial software. The behavior of metal flow, mean square deviation of the velocity field, extruding force, welding pressure, effective strain and effective stress of the deformation body in the chambers with different heights were studied in detailed. The simulation results provide theoretical reference for mould design and selection of technological parameters.

关 键 词：分流组合模 挤压成形 数值模拟 口琴管 焊合室高度 

分 类 号：TG376[金属学及工艺—金属压力加工]