Ni-Cr-W-Mo合金异型件热旋成形的质量分析  

Forming Quality of Heat Spinning for the Ni-Cr-W-Mo Superalloy Workpiece with Strange Shape

作　　者：安震[1] 李金山[1] 胡锐[1] 唐斌[1] 王健[2] 姚草根[2] 

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

出　　处：《科技导报》2012年第3期30-34,共5页Science & Technology Review

基　　金：国家自然科学基金项目(51171150);凝固技术国家重点实验室自主研究课题(62-TP-2011)

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多道次热力耦合三维有限元模型,研究了Ni-Cr-W-Mo合金异型件热旋成形过程中的应力应变场的分布以及成形规律和常见缺陷。结果表明,考虑到缺陷的形成以及成形道次尽可能减少等因素,旋压间隙应大于3.7mm;此外,工件在靠近中心轴的部分贴模性非常好,但越靠近工件口部,不贴模的趋势越明显。Based on the Explicit/Standard modules of software ABAQUS,a 3D finite element model of Ni-Cr-W-Mo superalloy workpiece with strange shape multi-pass is built.The distribution and variation features of stress-strain,hot spinning regular pattern,and common defects are investigated in the forming process for the Ni-Cr-W-Mo superalloy workpiece with strange shape.The results show that by taking some factors,such as the defects forming,minimizing forming pass,etc into account,the spinning gap should be bigger than 3.7mm.The gap between blank and mandrel is quite small at the region near the central axis,however,the gap near the oral part of workpiece increases enormously.

关 键 词：高温合金 热旋成形 回弹 数值模拟 

分 类 号：TG306[金属学及工艺—金属压力加工]