ZL201铝合金铸件凝固过程温度场的有限元模拟  

FEM Simulation of the 3D Temperature Field in Solidification Process of ZL201 Aluminum Alloy Casting

作　　者：刘广君[1] 

机构地区：[1]北方民族大学材料科学与工程学院,宁夏银川750021

出　　处：《铸造技术》2011年第1期67-71,共5页Foundry Technology

摘　　要：以矩形ZL201铝合金铸件压力铸造为例,对凝固过程进行了合理的假设和简化,利用有限元方法,对铸造凝固过程温度场宏观变化进行了模拟计算,获得了铸型与铸件在凝固过程中的温度分布规律。在凝固过程中,铸件温度一直呈下降趋势,铸型温度的变化趋势是先升高后降低。计算结果表明,三维温度场的数值模拟能够反映铸件冷却过程温度场的动态变化,为提高铸件质量、确定凝固时间和优化工艺参数提供了参考。On the basis of the solidification processes of die casting ZL201 Alloy,some reasonably simplify and proper assumptions were made.The three-dimensional temperature fields of rectangle-shaped sample of Aluminum alloy in solidification process were solved by using the finite element method software-ANSYS.According to the analysis results,the variation regularity of temperature distribution in the Aluminum alloy solidification process of sand casting was obtained.From beginning to end,temperature of casting was all along descending.However,temperature of the mould was increasing at beginning,and was then descending during the late stages.The result indicates that the numerical simulation of the 3D temperature field can reflect the dynamic change of the temperature field in the casting cooling process,such results provide foundation for improving the manufacture quality,determining casting＇s solidification time and optimizing foundry technology.

关 键 词：凝固 温度场 铝合金 数值模拟 有限元法 

分 类 号：TG244.3[金属学及工艺—铸造]