Transactions of Materials and Heat Treatment

Title：Bending deformation rules and parameters optimization on T2/20 bimetal clad tube

Authors： Zhang Yang Wang Tianbao Sun Jie Liu Lijuan Cai Ruofan Ma Kun

Unit： Shaanxi Applied Physics and Chemistry Research Institute The First Representative Office of Army Equipment in Xi′an

KeyWords： bimetal clad tube bending deformation wall thickness thinning section distortion response surface method

ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(10):176-185

Abstract：

Due to the great difference in mechanical properties of base and clad tubes, the deformation mechanism of bimetal clad tube is more complex than that of single tube in bending process, and the change rules of defects such as wall thickness thinning and section distortion are also different from those of single tube. Therefore, in order to reveal the bending deformation mechanism of bimetal clad tube and obtain better quality of bimetal clad bending tube, the influences of forming parameters on wall thickness thinning and section distortion of T2/20 bimetal clad tube during the bending process were studied by finite element simulation. Then, on this basis, the significance of interaction between forming parameters was analyzed based on response surface method, and the forming parameters were optimized to obtain the optimal combination of forming parameters. The results show that compared with other forming parameters, when the relative bending speed is greater than 1.0, the wall thickness and section do not change obviously, and the interaction between relative bending speed and relative bending radius has more significant influence on wall thickness thinning and section distortion than other factors. Thus, the optimum combination of forming parameters is e=5.66 mm，μm=0.05，μp=0.30，Vp=1.05，R/D=2.41。

Funds：

张洋（1996-），男，硕士，助理工程师，E-mail：zycestbon@163.com

Reference：

[1]刘新华，邹文江，付华栋，等. 铜/钛双金属复合管的热旋锻制备及其界面组织性能[J]. 稀有金属，2017，41(4)：364-370.

Liu X H, Zou W J, Fu H D, et al. Cu/Ti bimetal composite pipe fabricated by heating rotary swaging forming and its interface, microstructure and properties[J]. Chinese Journal of Rare Metals, 2017, 41(4): 364-370.

[2]杨专钊，魏伟荣，刘腾跃，等. 海洋油气输送用双金属复合管安装现状与趋势[J]. 石油管材与仪器，2017，3(2)：5-8,27.

Yang Z Z, Wei W R, Liu T Y, et al. Research on status and prospects of installation of bimetallic CRA pipes for offshore oil and gas[J]. Petroleum Tubular Goods & Instruments, 2017, 3(2): 5-8,27.

[3]国家自然科学基金委员会工程与材料科学部. 机械工程学科发展战略报告(2011—2020)[R]. 北京：科学出版社，2010.

Department of Engineering and Material Science, National Natural Science Foundation of China. Development Strategy Report of Mechanical Engineering discipline (2011—2020) [R]. Beijing: Science Press, 2010.

[4]杨专钊，李安强，魏亚秋. 双金属复合管标准发展现状及存在的问题[J]. 油气储运，2020，39(4)：395-399.

Yang Z Z, Li A Q, Wei Y Q. et al. Development status and existing problems of standards for bimetal composite pipe[J]. Oil & Gas Storage and Transportation, 2020, 39(4): 395-399.

[5]朱英霞，熊杭锋，陈炜，等. 异质双金属复合管的弯曲工艺研究进展[J]. 精密成形工程，2016，8(6)：8-14.

Zhu Y X, Xiong H F, Chen W, et al. Research progress for bending process of dissimilar material bimetallic composite tube[J]. Journal of Netshape Forming Engineering, 2016, 8(6): 8-14.

[6]Guo X Z, Wei W B, Xu Y, et al. Wall thickness distribution of Cu-Al bimetallic tube based on free bending process[J]. International Journal of Mechanical Sciences, 2019, 150: 12-19.

[7]蒋兰芳，王亚群，林姚辰，等. 芯棒参数对超薄壁管数控绕弯成形质量的影响[J].西安交通大学学报， 2020，54(4)：144-154.

Jiang L F, Wang Y Q, Lin Y C, et al. Effects of mandrel parameters on NC RDB forming quality of ultra-thin-walled tube[J]. Journal of Xi′an Jiaotong University, 2020, 54(4): 144-154.

[8]刘志文，董菲菲，李落星，等. 汽车防护杠用大口径薄壁钢管绕弯成形工艺参数优化[J]. 汽车工程，2015，37(7)：853-860.

Liu Z W, Dong F F, Li L X, et al. Process parameters optimization of rotary draw bending for large diameter thin-walled steel tube for automotive bumper[J]. Automotive Engineering, 2015, 37(7): 853-860.

[9]沈化文，刘郁丽，董文倩，等. 芯棒对铝合金矩形管绕弯回弹作用的数值模拟[J]. 材料科学与工艺，2012，20(1)：38-43.

Shen H W, Liu Y L, Dong W Q, et al. Numerical simulation of effects of mandrel on spring-back of aluminum alloy rectangular tube in rotary-draw bending process[J]. Materials Science and Technology, 2012, 20(1): 38-43.

[10]苟毓俊，双远华，周研，等. 间隙对0Cr18Ni9不锈钢管大曲率无芯弯曲成形性的影响[J]. 热加工工艺，2019，48(1)：117-120.

Gou Y J, Shuang Y H, Zhou Y, et al. Effect of clearance on formability of large curvature bending without mandrel for 0Cr18Ni9 stainless steel tube[J]. Hot Working Technology, 2019, 48(1): 117-120.

[11]王泽康，杨合，李恒，等. 大口径316L不锈钢管数控弯曲回弹规律研究[J]. 材料科学与工艺，2012，20(4)：49-54,60.

Wang Z K, Yang H, Li H, et al. Springback laws of large diameter 316L stainless steel tube in NC bending[J]. Materials Science and Technology, 2012, 20(4): 49-54,60.

[12]张静静，杨合，詹梅，等. 助推作用对大口径铝合金薄壁管数控弯曲壁厚减薄和回弹的影响[J]. 塑性工程学报，2008，15(1)：60-65.

Zhang J J, Yang H, Zhan M, et al. Effects of pressing die′s boosting function on wall thinning and springback in NC bending process of thin-walled tube with large diameter[J]. Journal of Plasticity Engineering, 2008, 15(1): 60-65.

[13]宋飞飞，杨合，李恒，等.TA18高强钛管数控弯曲回弹工艺参数影响的显著性分析[J]. 稀有金属材料与工程，2013，42(1)：43-48.

Song F F, Yang H, Li H, et al. Significance analysis of processing parameters effect on springback in high strength TA18 tube NC bending[J]. Rare Metal Materials and Engineering, 2013, 42(1): 43-48.

[14]方军，鲁世强，王克鲁，等. 工艺参数对21-6-9高强不锈钢管数控弯曲壁厚减薄影响的显著性分析[J]. 中国机械工程，2015，26(9)：1233-1238,1277.

Fang J, Lu S Q, Wang K L, et al. Significance analysis of effect of process parameters on wall thinning for 21-6-9 high strength stainless steel tube NC bending[J]. China Mechanical Engineering, 2015, 26(9): 1233-1238,1277.

[15]Zhu Y X, Chen W, Wu W B, et al. Three-dimensional finite element modeling of rotary-draw bending of copper-titanium composite tube[J]. The International Journal of Advanced Manufacturing Technology, 2020, 106：2377-2389.

[16]Qi Z Z, Zhang Y W, Zhang Y L. Effect of structural parameters and materials choice on the mechanical characteristics of expansion tubes[J]. AIP Advances, 2020, 10(9): 095309.

[17]李莉，张赛，何强，等. 响应面法在试验设计与优化中的应用[J]. 实验室研究与探索，2015，34(8)：41-45.

Li L, Zhang S, He Q, et al. Application of response surface methodology in experiment design and optimization[J]. Research and Exploration in Laboratory, 2015, 34(8): 41-45.

[18]CB/T 4000—2017, 中国造船质量标准[S].

CB/T 4000—2017, China shipbuilding quality standard[S].

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