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.
出处
《科技导报》
CAS
CSCD
北大核心
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)
关键词
高温合金
热旋成形
回弹
数值模拟
superalloy
heat spinning forming
springback
numerical simulation
