锻压技术

钛合金L型材电辅助热绕弯工艺仿真

英文标题：Simulation on electric assisted hot draw-bending process for titanium alloy L profile

作者：王杨杨李小强郭贵强金朝海李东升

单位：北京航空航天大学

关键词：钛合金 L型材电辅助热绕弯成形回弹

分类号：TG306

出版年,卷(期):页码：2021,46(4):136-142

摘要：

针对小截面大包角钛合金型材零件的弯曲成形，提出了一种新型热绕弯成形工艺。为了研究该工艺的成形特点，基于ABAQUS软件建立了钛合金L型材电辅助热绕弯成形的有限元模型，并对TC2钛合金弯曲构件在700 ℃条件下的热绕弯过程进行了数值模拟，分析了侧压力、摩擦系数、成形角速度及应力松弛时间等工艺参数对成形回弹的影响规律。结果表明：在采用新型热绕弯成形工艺成形小截面大包角型材零件的过程中，当侧压力和摩擦系数增大时，型材回弹量显著减小；当成形角速度增大时，型材回弹量随之增大；当应力松弛时间增加时，应力松弛后的型材回弹量呈现先显著减小、后趋于稳定的变化规律。

For the bending of titanium alloy profile part with small section and large wrap angle, a new hot draw-bending process was proposed. In order to explore the forming characteristics of the process, the finite element model of electric assisted hot draw-bending for titanium alloy L profile was established based on software ABAQUS, and the hot draw-bending process of TC2 titanium alloy curved component at 700 ℃ was simulated numerically. Then, the influence laws of process parameters such as side pressure, friction coefficient, forming angular velocity and stress relaxation time etc. on the forming springback were analyzed. The results show that in the process of forming profile parts with small section and large wrap angle, using the new hot draw-bending process, the springback of profile decreases significantly with the increasing of side pressure and friction coefficient, the springback of profile increases when the forming angular velocity increases, and when the stress relaxation time increases, the springback of profile after stress relaxation shows a significant decrease first and then tends to be stable.

基金项目：

国家重点研发计划资助项目(2017YFB0306200）；国家自然科学基金资助项目(51775023)；航空科学基金资助项目(2016ZE51040)

王杨杨（1995-），男，硕士研究生 E-mail：1747668646@qq.com 通讯作者：李小强（1979-），男，博士，副教授 E-mail：littlestrongcn@163.com

参考文献：

［1］马忠贤，冯军宁，胡志杰.钛及钛合金型材研究进展
［J］.世界有色金属,2016,(24): 52-53.

Ma Z X, Feng J N, Hu Z J. Research progress of titanium and titanium alloy profiles
［J］. World Nonferrous Metals, 2016, (24): 52-53.

［2］卜晓珍,翟华,周丽华,等.π截面铝合金型材拉弯成形工艺数值模拟研究
［J］.塑性工程学报,2019,26(2):151-161.

Bu X Z, Zhai H, Zhou L H, et al. Numerical simulation research on stretch-bending process for π-section aluminum alloy profiles
［J］. Journal of Plasticity Engineering, 2019,26 (2): 151-161.

［3］李倩,张杰刚,马凯,等.钝角型材框位移控制模式拉弯成形工艺
［J］.锻压技术,2020,45(11):106-111.

Li Q, Zhang J G, Ma K, et al. Stretch bending process of obtuse angle profile frame with displacement control mode
［J］. Forging & Stamping Technology, 2020,45 (11): 106-111.

［4］钱志平,林建凯,聂凯锋,等.非对称截面型材平面拉弯成形时法向变形研究
［J］.塑性工程学报,2020,27(7):176-181.

Qian Z P, Lin J K, Nie K F, et al. Study on the normal deformation of asymmetrical section profiles during plane stretch-bending forming
［J］. Journal of Plasticity Engineering, 2020, 27(7): 176-181.

［5］邓同生,李东升,李小强.型材热拉弯蠕变复合成形工艺技术及装备
［J］.塑性工程学报,2012,19(5):43-48.

Deng T S,Li D S,Li X Q. Technology and equipment for compound forming process of profile hot stretch-bending and creep
［J］. Journal of Plasticity Engineering,2012,19(5):43-48.

［6］徐义,李落星,李光耀,等.型材弯曲工艺的现状及发展前景
［J］.塑性工程学报,2008，15(3):61-70.

Xu Y, Li L X, Li G Y, et al. Extrusion bending: Method，application and recent development
［J］. Journal of Plasticity Engineering, 2008，15(3): 61-70.

［7］黄世军,陈凌霄,田洪才,等.型材滚弯回弹影响因素研究
［J］.塑性工程学报,2017,24(4):117-123.

Huang S J,Chen L X,Tian H C,et al. Study on the influential factors of profile roll bending springback
［J］. Journal of Plasticity Engineering,2017,24(4):117-123.

［8］王安恒,薛红前,高鹏飞,等.大截面Z型材滚弯成形缺陷的数值模拟及试验研究
［J］.航空制造技术,2018,61(7):62-69.

Wang A H,Xue H Q,Gao P F,et al. Numerical simulation and experimental of forming defects in roll-bending process for Z-shaped profiles with large cross-sections
［J］.Aeronautical Manufacturing Technology,2018,61(7):62-69.

［9］李小强，吕海洋，李东升，等.一种用于型材热拉弯的保温工装
［P］.中国：CN110976581A,2020-04-10.

Li X Q, Lyu H Y, Li D S, et al. A kind of heat preservation tooling for hot stretch bending of profiles
［P］. China：CN110976581A, 2020-04-10.

［10］谢洪志，刘金玲.钛合金复杂曲面冒型材成形工艺研究
［J］.产业与科技论坛,2016,15(23): 43-44.

Xie H Z, Liu J L. Research on forming process of titanium alloy profile with complex curved surface
［J］. Industrial & Science Tribune, 2016,15(23): 43-44.

［11］曾元松，刘宝胜，曹凤超，等.一种热拉弯模具及钛合金型材的拉弯成形方法
［P］.中国：CN110666040A,2020-01-10.

Zeng Y S, Liu B S, Cao F C, et al. A stretch bending method for hot stretch bending die and titanium alloy profile
［P］. China：CN110666040A, 2020-01-10.

［12］杨凯.TC4钛合金T型材电热拉弯成形技术研究
［D］.西安：西北工业大学,2016.

Yang K. Research on Electrothermal Stretch Bending Technology of TC4 Titanium Alloy T Profile
［D］. Xi′an： Northwest University of Technology, 2016.

［13］曹凤超，曾元松，刘宝胜，等.电流辅助钛合金L型材拉弯工艺研究
［J］.机械科学与技术,2019,38(9): 1437-1442.

Cao F C, Zeng Y S, Liu B S, et al. Study on current assisted stretch bending process of titanium alloy L profile
［J］. Mechanical Science and Technology, 2019, 38(9): 1437-1442.

［14］冯苏乐,简翰鸣,李年富,等.薄壁不锈钢管数控绕弯成形数值仿真及工艺研究
［J］.宇航总体技术,2019,3(4):41-48.

Feng S L, Jian H M, Li N F, et al. Numerical simulation and technological research of numerical control bending in thin-walled stainless steel tube
［J］. Aerospace General Technology, 2019,3(4): 41-48.

［15］邓同生.钛合金型材构件热拉弯蠕变精确成形理论及应用技术研究
［D］.北京：北京航空航天大学,2016.

Deng T S. Research on Theory and Application Technology of Hot Stretch Bending Creep Precision Forming of Titanium Alloy Profiles
［D］. Beijing：Beihang University, 2016.

［16］全运平.帽型材弯曲回弹有限元数值模拟研究
［D］. 南昌：南昌航空大学,2014.

Quan Y P. Research on Finite Element Numerical Simulation of Bending Springback of Cap Profile
［D］. Nanchang：Nanchang Hangkong University, 2014.

［17］何芝仙，崔建华，谢华刚，等.材料力学
［M］. 第2版. 武汉：武汉大学出版社,2018.

He Z X, Cui J H, Xie H G, et al. Mechanics of Materials
［M］. The 2nd Edition. Wuhan: Wuhan University Press, 2018.

［18］张晨,李小强,李东升,等. U形截面钛合金挤压型材热拉弯蠕变数值模拟
［A］. 中国机械工程学会塑性工程分会.创新塑性加工技术，推动智能制造发展——第十五届全国塑性工程学会年会暨第七届全球华人塑性加工技术交流会学术会议论文集
［C］.济南：中国机械工程学会塑性工程分会,2017.

Zhang C, Li X Q, Li D S, et al. Numerical simulation of hot stretch bending creep of U-shaped titanium alloy extruded profiles
［A］. China Society for Technology of Plasticity, CMES. Innovating Plastic Processing Technology to Promote the Development of Intelligent Manufacturing-Proceedings of the 15th Annual Meeting of China Society of Plastic Engineering and the 7th Global Chinese Plastic Processing Technology Exchange Conference
［C］. Jinan：China Society for Technology of Plasticity, CMES, 2017.

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