锻压技术

钛合金两轴柔性滚弯技术应用研究

英文标题：Study on application of two-axis flexible roll bending technology for titanium alloy

作者：赵淘李晓龙杜春峰鹿启栋孙敏杰娄一峰

分类号：TG379

出版年,卷(期):页码：2022,47(2):83-87

摘要：

针对钛合金筒形件采用常规滚弯工艺成形时存在的直边长、质量不稳定、加工周期长等问题，选取典型航天产品进行钛合金两轴柔性滚弯工艺验证。试验结果表明：两轴柔性滚弯成形能力强，无需多次滚弯，且得到的工件直边短，单个钛合金筒形件成形周期可控制在1 min以内；两轴柔性滚弯技术中，超弹性材料的应用提高了钛合金成形精度，得到的试验件全部符合成形技术指标要求；经典弯曲回弹公式可用于计算钛合金两轴柔性滚弯时的刚性辊直径，得到的工件内表面曲率半径的理论值和实际值偏差在0.7 mm内。因此，两轴柔性滚弯技术可实现钛合金筒形件的高效率、高质量冷成形，具备很好的工程应用前景。

Aiming at the problems of long straight-flange, unstable quality and long processing cycle that exist when titanium alloy cylindrical parts are formed by conventional roll bending process, for typical aerospace product, two-axis flexible roll bending process validation was conducted. The test results show that two-axis roll bending has strong forming ability without multi-pass roll bending, the straight-flange of part obtained is short, and the forming cycle of a titanium alloy cylindrical part is controlled within 1 min. Then, the application of superelastic material in two-axis flexible roll bending technology improves the forming accuracy of titanium alloy parts，and all the test parts obtained meet the requirements of forming technical indicators. Furthermore, the classical formula of bending springback is used to calculate the diameter of rigid roller during the two-axis flexible roll bending of titanium alloy, and the deviation between theoretical value and actual value of the curvature radius for the part inner surface obtained is within 0.7 mm. Thus, the two-axis flexible roll bending technology can realize cold forming of titanium alloy cylindrical part with high efficiency and high quality, and has a good prospect in engineering application.

基金项目：

赵淘（1989-），男，硕士，高级工程师,E-mail：tonyzhao1009@163.com

参考文献：

[1]赵融，廖金华.先进材料与工艺在机载导弹上的研究与应用[J].航空制造技术，2016，（Z2）：120-125，132.

Zhao R, Liao J H. Research of advanced materials and technologies on airborne missile[J]. Aeronautical Manufacturing Technology, 2016, (Z2): 120-125，132.

[2]Zhao Z Y, Wang G F, Hou H L, et al. The effect of pulsed current on the shear deformation behavior of Ti-6Al-4V alloy[J]. Scientific Reports, 2018, 8（1）:14748-14756.

[3]江双双.电脉冲辅助TC4钛合金板滚弯成形研究[D].南京：南京航空航天大学，2018.

Jiang S S. Investigation into the Electrically-Assisted Roll Bending Process of A TC4 Titanium Alloy Sheet[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2018.

[4]韦超，曹雪峰，姜恒，等.小曲率半径薄壁钛合金筒形件冷辊弯技术研究[J].航天制造技术，2014，（1）：15-17,22.

Wei C, Cao X F, Jiang H, et al. Study on technology of cold roll bending thin-walled tube-shaped titanium alloy parts with small curvature radius[J]. Aerospace Manufacturing Technology, 2014, （1）：15-17,22.

[5]董文倩，韦超. 小曲率薄壁钛合金筒形件冷滚弯成形数值模拟研究[J]. 航天制造技术，2014，（2）: 55-59.

Dong W Q, Wei C. Numerical simulation of cold roll-bending process of small curvature thin-walled tubular workpieces for titanium alloy[J]. Aerospace Manufacturing Technology, 2014, （2）: 55-59.

[6]宋攀峰. 柔性滚弯成形技术研究进展[J]. 机械制造与自动化，2017，（5）:42-44.

Song P F. Research progress of flexible roll bending technologies[J]. Machine Building & Automation, 2017,（5）:42-44.

[7]毕高杰，黎向锋，李堃，等. 聚氨酯轮硬度对小直径开缝衬套成形性能的影响[J]. 现代制造工程，2019，（7）:83-103.

Bi G J, Li X F, Li K, et al. Effect of polyurethane wheel hardness on the forming property of small diameter split sleeve[J]. Modern Manufacturing Engineering, 2019,（7）:83-103.

[8]杨昆瑛，方刚，曾攀，等. 双辊柔性滚弯成形过程三维有限元分析[J]. 塑性工程学报，2020，27（8）:31-38.

Yang K Y, Fang G, Zeng P, et al. Three-dimensional finite element analysis of two-roller flexible bending process[J]. Journal of Plasticity Engineering, 2020, 27（8）：31-38.

[9]Tan H, Guo M L, Clare A T, et al. Microstructure and properties of Ti-6Al-4V fabricated by low-power pulsed laser directed energy deposition[J]. Journal of Materials Science & Technology, 2019, 35(9): 2027-2037.

[10]左敦稳，王珉，刘奎，等. 双轴柔性滚弯技术的实验研究[J]. 南京航空航天大学学报，1998，30（5）：473-478.

Zuo D W, Wang M, Liu K, et al. Experimental study on two-axle bending technique[J]. Journal of Nanjing University of Aeronautics & Astronautics, 1998，30（5）：473-479.

[11]屈晓敏，周云飞. 双轴滚弯成形机成形过程与设计[J]. 洪都科技，2003，（1）:9-15.

Qu X M, Zhou Y F. Forming process and design of dual-roller forming machine[J]. Hongdu Science & Technology, 2003，（1）:9-15.

[12]余国庆，鲁世红. 基于有限元分析的二轴柔性滚弯过程影响因素的研究[J]. 机械科学与技术，2005，24（10）：1187-1229.

Yu G Q, Lu S H. Study of the influence factors on two-roll bending with elastic medium based on finite element analysis[J]. Mechanical Science and Technology, 2005, 24（10）：1187-1229.

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