摘要
基于刚粘塑性有限元理论,采用DEFORM-3D有限元软件,对6061铝合金异形管材分流挤压工艺过程进行了数值模拟,揭示了挤压力的变化规律和坯料金属温度的分布规律。通过虚拟正交试验,获得了影响挤压力峰值的因素主次顺序为:工作带长度L>焊合角θ>焊合室深度h。以降低挤压力峰值为优化目标,获得了该规格6061铝合金异型管材分流挤压工艺最优水平组合为焊合室深度h=20mm,焊合角θ=35°,工作带长度L=5mm。
Based on rigid viscoplastic finite element theory, the extrusion process of A16061 alloy split-flow die was numerically simulated with finite element analysis software DEFORM-3D. The extrusion load and temperature fields of billet metal were displayed. Through the virtual orthogonal experiment, it was gained that the sequence of influencing factors of maximum extrusion force are L （work zone length）〉θ（welding angle）〉 h （welding chamber depth）. Taking reducing the peak of extrusion load as optimized object, it was gained that the reasonable parameters are h=20 ram, θ-35° and L=5mm.
出处
《热加工工艺》
CSCD
北大核心
2013年第1期82-84,共3页
Hot Working Technology
基金
中国博士后基金特别资助项目(2012T50818)
关键词
6061铝合金
异形管材
分流挤压工艺
数值模拟
虚拟正交优化
A16061 aluminium alloy
heteroideus pipe
split-flow extrusion process
numerical simulation
virtual orthogonal optimum
