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铝型材挤压过程数值模拟及模具优化设计
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摘要
针对目前生产中存在的模具设计凭借经验和反复生产来设计的问题,本文以方形管铝型材为研究对象,通过三维立体建模软件Solidworks构建了挤压方形管铝型材的平面分流组合模。然后通过模拟软件Deform-3D对挤压过程进行了模拟。最终通过模拟获得的数据,对平面分流组合模进行了优化设计。
     在利用三维建模软件建模时,主要介绍了平面分流组合模的设计步骤,并详细介绍了平面分流组合模结构参数对挤压过程的影响。
     利用Gleeble—1500热力模拟试验机对6063铝合金(400℃~520℃)的不同应变率和应变了进行了热力模拟试验,获得了6063铝合金的真实应力—应变曲线和方程。
     用正交试验法分别确定了内斜度、外斜度和焊合腔深度的最佳方案,并通过模拟软件Deform-3D对正交试验方案进行了模拟,对挤压筒等效应力和焊合腔静水压应力进行了观察分析。最后在上述研究的基础上,提出了平面分流组合模优化设计的措施。
Alloy profile of square is analyzed. The porthole die by using SolidWorks are designed and the protrusion by using Deform-3D are simulated. The data of simulation are obtained, at last the optimization design of the porthole die are gained.
    Design steps of the porthole die and effect of the structure parameters to the protrusion process are introduced.
    By using Gleeble-1500 thermomechanical simulator, compressed tests of aluminum alloy are made in certain temperature, at certain strain rate and strain, the true stress-strain curve and equation of 6063 aluminum alloy are gained.
    By the method of orthogonal experiment, the optimum technical parameters are selected, which are inside slope, outside slope and depth of the weld-chamber. By using Deform-3D, the effect stress of the porthole and mean stress of the weld-chamber are analyzed. Based on the above, the measures to improve the design of porthole die are proposed.
引文
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