锻压技术

L形截面环件径轴向轧制过程数值模拟与工艺优化

英文标题：Numerical simulation and process optimization on radial-axial rolling process for L-shaped cross-sectional ring

作者：顾森东张立文张驰申文飞徐倩虹

单位：大连理工大学

分类号：TG316

出版年,卷(期):页码：2017,42(5):48-51

摘要：

径轴向轧制成形技术是生产大型高品质L形截面无缝环件的理想加工方法。以Deform有限元软件为平台，对L形截面环件径轴向轧制过程进行了数值模拟，揭示了L形截面环件轧制过程中折叠和凹坑缺陷的形成机理。以此为基础，对初始环件尺寸和轧制工艺进行了优化。研究结果表明:初始环件尺寸和轧制速度设计不合理是缺陷出现的主要原因；优化后的初始环件和进给速度能够消除缺陷，使环件的截面形状填充较好。

The radial-axial rolling technology is an optional technology to produce high-quality L-shaped cross-sectional ring. Based on finite element (FE) software Deform, the radial-axial rolling process for L-shaped cross-sectional ring was numerically simulated, and the formation mechanisms of overlap and depression defects were revealed in the radial-axial rolling process for L-shaped cross-sectional ring. On the basis of these, the size of initial ring and rolling technology were optimized. The results indicate that the unreasonable designs of the initial ring and the rolling speed are the main causes of defects. Thus, the optimized initial ring and rolling speed can eliminate the defects and improve the section shape of ring.

基金项目：

中央高校基本科研业务费（DUT16RC（4）84）；辽宁省教育厅科学研究一般项目（L2015120）

顾森东（1986-），男，博士研究生张立文（1962-），男，博士，教授

参考文献：

［1］王敏, 张春. 大型环件热辗扩成形宽展的工艺因素效应研究[J]. 热加工工艺, 2012, 41(7): 4-7. Wang M, Zhang C. Effect of process factors on spread in hot rolling of large ring[J]. Hot Working Technology, 2012, 41(7): 4-7.
［2］徐俊, 黄瑶, 王雷刚. 鼓形环坯轧制的宏微观变化数值模拟研究[J]. 锻压技术, 2016, 41(6): 32-37. Xu J, Huang Y, Wang L G. Numerical simulation research on macrostructure and microstructure evolution of drum-shaped ring blank rolling[J]. Forging & Stamping Technology, 2016, 41(6): 32-37.
［3］谷瑞杰, 张淑莲, 杨大祥, 等. 成形条件对大型环件径轴向轧制成形影响研究[J]. 锻压技术, 2016, 41(5): 57-60.Gu R J, Zhang S L, Yang D X, et al. Influence of forming condition on radial-axial rolling for large ring[J]. Forging & Stamping Technology, 2016, 41(5): 57-60.
［4］李洪伟, 付建华. 大型环件热辗扩数值模拟与实验研究[J]. 山西冶金, 2007, 30(4): 19-21. Li H W, Fu J H. Researh and numerical simulation on hot rolling large ring[J]. Shanxi Metallurgy, 2007, 30(4): 19-21.
［5］韩星会, 华林, 兰箭, 等. 内台阶锥形环件轧制三维有限元模拟和工艺优化设计[J]. 中国机械工程, 2007, 18(16): 1979-1983.Han X H, Hua L, Lan J, et al. 3D finite element modeling and processing optimization of rolling technology for conical ring with inner steps [J]. China Mechanical Engineering, 2007, 18(16): 1979-1983.
［6］ Zhou P Z, Zhang L W, Gu S D, et al. Mathematic modeling and FE simulation of radial-axial ring rolling large L-section ring by shape axial roll [J]. The International Journal of Advanced Manufacturing Technology, 2014, 72(5-8): 729-738.
［7］ Song J L, Dowson A L, Jacobs M H, et al. Coupled thermo-mechanical finite-element modelling of hot ring rolling process [J]. Journal of Materials Processing Technology, 2002, 121(2): 332-340.

服务与反馈：

【文章下载】【加入收藏】