锻压技术

浅L形环件对轧成形工艺

英文标题：Pair rolling process of shallow L-shaped ring

作者：齐会萍庞晓龙李永堂兰鹏伟

单位：太原科技大学金属材料成形理论与技术山西省重点实验室山西省金瑞高压环件有限公司

分类号：TG335

出版年,卷(期):页码：2019,44(7):72-78

摘要：

针对浅L形环件热辗扩成形受力不平衡、难以成形的问题，分析了浅L形环件热辗扩成形的受力情况，提出了一种适合于浅L形大型环件的辗扩工艺，并对该工艺进行了理论分析和实验研究。对常用于风电法兰的Q345E钢材进行了热力模拟实验，研究了其热力学行为，获得了其高温应力-应变曲线。根据理论分析和热力模拟实验，设计了辗扩方案，并进行了辗扩实验研究。研究结果表明，用该方法辗扩成形浅L形异形环件，辗扩过程可平稳进行，并获得了椭圆度小、尺寸精度高的环件。经力学性能实验验证，辗扩的浅L形异形环件完全满足产品标准要求。

For the problems of unbalanced force and difficult forming in hot ring rolling process of shallow L-shaped ring, its force analysis was carried out, a ring rolling process suitable for shallow L-shaped ring was proposed, and the theoretical analysis and experimental study of the process were conducted. Then, the thermal-mechanical simulation experiments of Q345E steel often used in wind power flanges were performed, and the high temperature stress-strain curves of Q345E steel were obtained by studying its thermal-mechanical behavior. According to the theoretical analysis and the thermal-mechanical simulation experiments, the ring rolling process scheme was designed, and the ring rolling experiments were carried out. The experimental results show that the ring rolling process of shallow L-shaped alien ring can be smoothly performed by the above method, and the shallow L-shaped alien ring has small ellipticity and high dimensional accuracy. Furthermore, the rolled shallow L-shaped alien ring could fully meet the standard requirements of products which were verified by the mechanical properties experiments.

基金项目：

国家自然科学基金资助项目（51575371,51875383）；山西省重点研发计划（03012015004）；国家留学基金资助（留金法［2017］ 5087）

齐会萍（1974-），女，博士，副教授，E-mail：qhp9974@tyust.edu.cn

参考文献：

[1]丰凯.大型L形环件径轴向轧制成形仿真分析 [J]. 现代制造技术与装备，2014，(4):21-23.

Feng K. Simulation analysis on radial-axial ring rolling of large L-shape ring[J]. Modern Manufacturing Technology and Equipment, 2014, (4)：21-23.

[2]顾森东，张立文，张驰, 等. L形截面环件径轴向轧制过程数值模拟与工艺优化 [J]. 锻压技术，2017,42(5):48-51.

Gu S D, Zhang L W, Zhang C, et al. Numerical simulation and process optimization on radial-axial rolling process for L-shaped cross-sectional ring [J]. Forging ＆ Stamping Technology, 2017,42(5):48-51.

[3]Zhou G, Hua L, Qian D S.3D coupled thermo mechanical FE analysis of roll size effects on the radial-axial ring rolling process[J]. Computational Materials Science, 2011,50(3): 911-924.

[4]Hua L, Qian D S, Pan L B. Deformation behaviors and conditions in L-section profile cold ring rolling [J]. Journal of Materials Processing Technology, 2009, 209(11):5087-5096.

[5]华林，钱东升，邓加东，等. 超大型环件轧制理论与技术 [J].锻压技术，2018,43(7）:16-31.

Hua L, Qian D S, Deng J D, et al. Theory and technology of super-large ring rolling[J]. Forging & Stamping Technology, 2018,43（7）:16-31.

[6]袁银良，华林，左治江，等. L形截面环件轧制进给速度对端面轴向宽展影响的研究 [J].机械制造，2006，44（3）:28-32.

Yuan Y L, Hua L, Zuo Z J, et al. Effect of feed velocity of L-section ring rolling on axial width-spread of end plane [J]. Machinery,2006，44（3）:28-32.

[7]Park Mincheol, Lee Chanjoo, Lee Jungmin, et al. Development of L-sectioned ring for construction machines by profile ring rolling process [J]. International Journal of Precision Engineering and Manufacturing, 2016, 17(2): 233-240.

[8]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.

[9]王志军, 付建华，齐会萍. 异步环件多步辗扩模拟 [J]. 精密成形工程，2016,8(6):15-20.

Wang Z J, Fu J H, Qi H P. Multi-step simulation of expanding exhibition profiled ring [J]. Journal of Netshape Forming Engineering, 2016,8(6): 15-20.

[10]王志军, 齐会萍, 付建华. 基于锻坯的大型内台阶环件双件轧制[J]. 锻压技术, 2017, 42(2):82-86.

Wang Z J, Qi H P, Fu J H. Study on two-piece rolling for large inner step based on forging stock [J]. Forging & Stamping Technology, 2017, 42(2):82-86.

[11]杨合, 李兰云, 王敏,等. 异形环件冷辗扩中环件半径扩大变形行为研究 [J]. 中国科学: 技术科学，2010，40（7）: 802-810.

Yang H, Li L Y, Wang M, et al. Research on the expanding deformation of ring radius in cold profiled ring rolling process [J]. Sci.China:Tech.Sci., 2010, 40（7）: 802 -810.

[12]Qian D S, Zhang Z Q, Hua L. An advanced manufacturing method for thick-wall and deep-groove ring-combined ring rolling[J]. Journal of Materials Processing Technology, 2013,213(8):1258-1267.

服务与反馈：

【文章下载】【加入收藏】