Transactions of Materials and Heat Treatment

Title：Optimization on hydroforming technology and process of irregular cross-section tube

Authors： Lang Lihui Zhang Chi Kong Deshuai Ruan Shangwen Liu Zheng

Unit： Beihang University

KeyWords： irregular crosssection tube hydroforming cavity pressure loading path axial feeding length numerical simulation

ClassificationCode：TG394

year,vol(issue):pagenumber：2017,42(10):57-62

Abstract：

Irregular crosssection tube is widely used in the automotive chassis structure field, which not only make full use of material strength and stiffness, but also is an important measures to achieve the aim of reducing product weight. Therefore, an irregular crosssection tube of car chassis was studied, and the finite element model of hydroforming for mild steel QSTE340 was established by finite element software of Dynaform. Furthermore, the influences of initial tube shape,initial yield pressure, calibration pressure and axial feeding length on the forming results were investigated during the hydroforming process, and its accuracy was verified by the experiment. The results show that the forming quality of part can be enhanced when the perimeter of each crosssection of initial tube equals to that of the final component. Thus, when the initial yield pressure is 70 MPa, the calibration pressure is 200 MPa,and the axial feeding length is 25 mm, a qualified part can be made.

Funds：

国家科技重大专项（2014ZX04002041）

作者简介：郎利辉（1970-），男，博士，教授，E-mail：lang@buaa.edu.cn；通讯作者：张弛（1994-），男，硕士研究生，E-mail：emzhangchi@foxmail.com

Reference：

[1]范子杰，桂良进，苏瑞意.汽车轻量化技术的研究与进展[J].汽车安全与节能学报，2014，5（1）：1-16.

Fan Z J, Gui L J, Su R Y. Research and development of automotive lightweight technology[J]. Journal of Automotive Safety and Energy, 2014, 5(1):1-16.

[2]Koc M, Altan T. An overall review of the tube hydroforming (THF) technology[J]. Journal of Materials Processing Technology, 2001, 108(3): 384-393.

[3]苑世剑，韩聪，王小松.空心变截面构件内高压成形工艺与装备[J].机械工程学报，2012，48（18）：21-27.

Yuan S J, Han C, Wang X S. Hydroforming processes and equipments of hollow structures with various sections[J]. Journal of Mechanical Engineering, 2012, 48(18): 21-27.

[4]郎利辉，苑世剑，王仲仁，等. 管件内高压成形及其在汽车工业中的应用现状[J].中国机械工程，2004,15（3）：268-272.

Lang L H, Yuan S J, Wang Z R, et al. Present situation of tube hydroforming and its application in the automobile industry[J]. China Mechanical Engineering, 2004, 15(3): 268-272.

[5]Dohmann F, Hartl C. Hydroforming-a method to manufacture light-weight parts[J]. Journal of Materials Processing Technology, 1996, 60(1): 669-676.

[6]苑世剑.现代液压成形技术[M]. 北京：国防工业出版社，2009.

Yuan S J. Modern Hydroforming Technology[M]. Beijing: National Defence Industry Press, 2009.

[7]宋鹏，王小松，韩聪，等. 铝合金矩形截面内高压成形圆角充填行为研究[J].机械工程学报，2010, 46（12）：59-64.

Song P, Wang X S, Han C, et al. Filling behavior of transition corner in hydroforming of aluminum alloy rectangular section tube[J]. Journal of Mechanical Engineering, 2010, 46(12): 59-64 .

[8]何玉林，吴春蕾，杨连发.管材脉动液压成形时接触压强与液体压强关系的研究[J].锻压技术，2015,40（10）：29-34.

He Y L, Wu C L, Yang L F. Research on the relationship of contact pressure and hydraulic pressure in the tube pulsating hydroforming [J]. Forging & Stamping Technology, 2015,40（10）：29-34.

[9]杨兵.管件液压成形的加载路径理论与试验研究[D].上海：上海交通大学，2006.

Yang B. Study on the Loading Paths of the Tube Hydroforming Process[D]. Shanghai: Shanghai Jiao Tong University, 2006.

Service：

【This site has not yet opened Download Service】【Add Favorite】