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요약정보
TA2圆管辊弯成型边波缺陷及机理研究 / Edge Wave Defects and Mechanism of TA2 Round Tube Roll Forming
Resource Type
Academic Journal
Authors
王占一
;
刘晓立
;
马希青
;
王艳辉
;
闫宾
;
张望成
;
WANG Zhan-yi
;
LIU Xiao-li
;
MA Xi-qing
;
WANG Yan-hui
;
YAN Bin
;
ZHANG Wang-cheng
Source
精密成形工程 / Journal of Netshape Forming Engineering
. 15(2):51-59
Subject
辊弯成型
纯钛
边波
有限元
COPRA
Language
Chinese
ISSN
1674-6457
Online Access
Find it @ DONGA
초록
目的 为消除TA2薄壁圆管在辊弯成型过程中产生的边波缺陷,研究分析不同成型方法中TA2薄壁圆管焊缝处纵向应力及应变大小的变化规律.方法 运用专业型钢软件COPRA RF和有限元MSC.MARC商业软件建立符合生产标准的三维薄壁圆管模型,展开多机架连续辊弯成型过程的有限元仿真,并进行辊弯成型试验验证.结果 试验结果表明,成型方式不合理是引起TA2薄壁圆管辊弯成型边波的重要原因.随着道次间成型结束后塑性应力与纵向应力的累积,TA2薄壁圆管焊缝处出现褶皱现象,即薄壁圆管产生边波缺陷.通过有限元分析及TA2纯钛薄壁圆管生产试验验证发现,基于普通成型法加工的薄壁圆管焊缝处失稳区辊弯纵向应变波动峰值由0.6%降低到基于上山法成型的0.3%.结论 使用上山法可以消除TA2纯钛薄壁圆管在辊弯加工工艺中产生的边波缺陷,提高了产品精度并为后续装配提供了保障,研究结果为消除工业纯钛圆管边波缺陷奠定了良好的理论基础.
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