锻压技术

异形截面管充液成形工艺及过程优化

英文标题：Optimization on hydroforming technology and process of irregular cross-section tube

作者：郎利辉张弛孔德帅阮尚文刘铮

单位：北京航空航天大学

分类号：TG394

出版年,卷(期):页码：2017,42(10):57-62

摘要：

异形截面管件广泛应用于汽车底盘结构件领域，它不仅可以充分利用材料的强度和刚度，而且是实现结构轻量化的重要措施之一。对汽车底盘变截面管件进行研究，利用有限元软件Dynaform建立了QSTE340低碳钢管材充液成形的有限元模型。研究了充液成形过程中管材预制坯形状、初始屈服压力、整形压力及推头轴向进给量对成形结果的影响，并通过试验验证了仿真分析的准确性。研究结果表明：在异形截面管零件成形过程中，管材预制坯各截面周长与最终零件各截面周长相近时，可以提高成形质量；当初始屈服压力为70 MPa、整形压力为200 MPa、轴向补料量为25 mm时，可以成形出合格零件。

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.

基金项目：

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

参考文献：

[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.

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