论文部分内容阅读
采用作者等人开发的基于Deform-3D与Pro/Engineer的网格行重构技术,对典型大断面空心铝合金工业型材分流模挤压全过程(包括焊合过程)进行了模拟分析。结果表明,采用某企业的现行模具设计方案,挤压初始阶段,型材两侧焊合面率先产生焊合,中间部位焊合面的焊合相对滞后,导致挤出型材断面的中间位置金属流量不足,同时模芯出现弹性偏移,易造成壁厚超差;挤压稳态阶段,模孔附近型材的最高温度为520℃、焊合室内的静水压力约为A6005铝合金屈服强度的5~10倍、模芯弹性偏移量为0.43 mm,基本满足型材挤出温度、焊合质量及壁厚尺寸公差的要求。
Based on the Deform-3D and Pro / Engineer grid reconfiguration techniques developed by the author, the simulation analysis was carried out on the whole extrusion process (including the welding process) of a typical large-section hollow aluminum alloy industrial profile. The results show that using the current mold design scheme of an enterprise, the initial welding stage of welding profiles on the two sides of the profiles leads to the welding first, and the welding of the welding surface in the middle part lags behind. As a result, the metal flow in the middle of the section of extruded profiles is insufficient , While the mold core elastic deflection, easily lead to ultra-poor wall thickness; extrusion steady-state phase, the maximum temperature near the die hole is 520 ℃, hydrostatic pressure within the welding chamber is about A6005 aluminum yield strength of 5 to 10 Times, the elastic displacement of the core is 0.43 mm, basically meeting the requirements of profile extrusion temperature, welding quality and wall thickness tolerance.