Significance Analysis of Processing Parameters on Wall Thinning in Tube Bending

Abstract:

Tube bending is a complex process with multi-factor coupling effect and multiple defects occurring. The wall thinning, as one of the important defects in tube bending, determines the bending quality. In this study, taking thin-walled 6061-T4 Al-alloy tube with Φ50.8×t0.889×R101.6mm (outer diameter D × wall thickness t × bending radius R) as the objective, the significance of processing parameters on the wall thinning degree is studied using the orthogonal test under ABAQUS/Explicit platform. The results show that: 1) the bending radius, the clearance between the tube and the pressure die, the friction between the tube and the pressure die, the clearance between the tube and the pressure die, the clearance between the tube and the mandrel and the friction between the tube and the mandrel affect the wall thinning significantly, while the coefficient of boost velocity, the number of mandrel balls, the friction between the tube and the wiper die, the mandrel extension length and the friction between the tube and the bending die have little effect on the wall thinning degree.

• Periodical: Advanced Materials Research (Volumes 622-623)
• Pages: 437-441
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.622-623.437
• Online since: December 2012
• Authors: Heng Li, Kai Peng Shi, He Yang, Yu Li Tian
• Keywords: Al-Alloy Tube, Finite Element (FE) Simulation, Processing Parameters, Significance Analysis, Tube Bending, Wall Thinning

References

[1] H. Yang, H. Li, Z.Y. Zhang, M. Zhan, J. Liu and G.J. Li: Chinese Journal of Aeronautics Vol. 25(2012), p.1.

[2] H. Li and H. Yang: Chinese Journal of Aeronautics. Vol. 24(2011), p.102.

[3] H. Yang, H. Li and M. Zhan: J. Mater. Proc. Technol: Vol. 210(2010), p.2273.

[4] Z.Y. Zhang, H. Yang, H. Li, N. Ren, Y.L. Tian: Progreee in Natural Science: Materials Internaional. Vol. 21(2011), p.401.

[5] J. Xu, H. Yang, H. Li and M. Zhan: Transctions of Nonferrous Metals Society of China. Vol. 22(2012), p.147.

[6] J. Yan: Phd thesis, Northwestern Polytechnical University of China, 2010 (in Chinese).

[7] Y. L. Kou: M.S. thesis, Northwestern Polytechnical University of China, 2007 (in Chinese).

[8] H. Yang: Experiment Modeling Method In Material Processing (Northwestern Polytechnical University Press, China, 2008) (in Chinese).