熔模铸造型壳焙烧过程变形仿真分析  

Simulation Analysis on Shell Deformation During Firing Process in Investment Casting

作　　者：王玉莲[1] 金隼[1] 王飞[2] 刘畅辉 

机构地区：[1]上海交通大学上海市复杂薄板结构数字化制造重点实验室,上海200240 [2]上海交通大学金属基复合材料国家重点实验室,上海200240

出　　处：《热加工工艺》2014年第11期72-75,78,共5页Hot Working Technology

基　　金："十二五"国家科技支撑计划项目(2012BAF06B03)

摘　　要：熔模铸造铸件尺寸精度对保证铸件的装配精度,提高使用寿命有很重要的意义。通过对型壳微观结构以及型壳焙烧过程中不同阶段的变形机理的研究,得到了型壳高温焙烧过程中变形特点。借助有限元分析软件,运用合理的材料本构模型对型壳进行了仿真分析,得到了型壳变形的有限元仿真模型。最后通过对三组不同的实验与仿真结果进行对比,验证了模型的正确性。The dimension accuracy of casting plays an important role in investment casting to ensure the accuracy of the casting assembly, and improve the service life. By studying the shell microstructure and shell deformation mechanism during firing process, the shell deformation characteristics during the process of firing can be obtained. By finite element software, the deformation of shell using reasonable material constitutive model was simulated. The shell deformation finite element simulation model can be obtained. At last, by comparing the three groups of experimental and simulation results, the correctness of the model can be verified.

关 键 词：熔模铸造 型壳 变形 仿真分析 焙烧 

分 类 号：TG249.5[机械工程—精密仪器及机械]