铝合金矩形管拉拔成形质量因素分析优化
Analysis and Optimization of Related Parameters to Quality of Aluminum Rectangular Tube in Drawing Process
徐戊矫， 王凯庆， 朱若岭
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作者单位：重庆大学 材料科学与工程学院，重庆400044
中文关键字：矩形管拉拔；工艺优化；MARC；模拟仿真
英文关键字：rectangular tube drawing； process optimization； MARC； simulation
中文摘要：应用有限元模拟软件MARC对铝合金矩形管拉拔成形质量影响因素进行模拟仿真。对拉拔速度、模具入模角和摩擦因子三个工艺参数进行分析，通过比较等效塑性应变的分布、残余应力、拉拔载荷的影响规律以及成品管的尺寸精度，得到了较优的拉拔工艺方案。采用优化后的方案生产试制的成品管表面质量良好，尺寸合格，与模拟相吻合。
英文摘要：The FEM software MARC was used to investigate the influence of the related factors on the forming quality of aluminum rectangular tube. The optimization scheme was decided in view of equivalent plastic strain distribution, the influence law of residual stress and drawing load as well as the dimension accuracy of finished tube, in which the drawing velocity, drawing die semi-angle and friction coefficient were chosen as the optimization variables. The aluminum rectangular tubes produced by the optimation parameters have got perfect surface quality and eligible dimensions, they are in good agreement with the results of simulation.