Ni-Cr-W-Mo合金异型件的热旋成形规律有限元分析  

FEM Analysis on the Heat Spinning for Ni-Cr-W-Mo Superalloy Workpiece with Strange Shape

作　　者：安震[1] 李金山[1] 胡锐[1] 王健[2] 贾新潮[2] 周廉[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]航天材料及工艺研究所,北京100076

出　　处：《稀有金属材料与工程》2013年第1期70-74,共5页Rare Metal Materials and Engineering

基　　金：新世纪优秀人才支持计划项目(NCET-07-0690)

摘　　要：基于ABAQUS软件的Explicit/Standard模块建立了Ni-Cr-W-Mo合金异型件热旋成形的热力耦合的三维有限元模型。基于正交试验优选了第1道次的工艺参数,研究该合金的异型件成形、回弹过程中应力场的分布及热旋成形规律。结果表明,芯模转速和圆角半径分别对工件的拉裂和起皱影响最显著,卸载后的回弹对等效应力分布趋势影响较小,使得大部分区域的应力得到了释放;热旋后的实际壁厚值和理论壁厚值有一定的偏差。Based on the software ABAQUS Explicit/Standard modules, three-dimensional finite element model ofNi-Cr-W-Mo superalloy workpiece with strange shape was built. On the basis of orthogonal test, the process parameters of the first pass were optimized, and the distribution of stress and the hot spinning regular pattern in the process of metal forming and springback were analyzed. The results show that the rotary velocity of mandrel has the most significant influence on breakage tendency, and the roller roundness radius on wrinkle tendency After the unloading course the springback has a little effect on the trend of distribution of equivalent stress, and the most of the regional stress has been released, After the process of hot spinning, there is some deviation between the actual thickness and theoretical thickness value

关 键 词：高温合金 热旋成形 热力耦合 回弹 数值模拟 

分 类 号：TG306[金属学及工艺—金属压力加工]