Transactions of Materials and Heat Treatment

Title：Influence of hydro-pressure inside tube on hydropiercing

Authors： SU Hai-bo LIU Gang CHEN Xin-ping QI Jun

Unit： Shanghai Baosteel Co. Ltd. Harbin Institute of Technology

KeyWords： tube hydroforming hydropiercing

ClassificationCode：TG316.1+5

year,vol(issue):pagenumber：2011,36(3):19-23

Abstract：

An experiment instrument of hydropiercing was designed and manufactured. At the same time, the technology experiment was conducted successfully. The experimental result shows that collapse decreases with the increasing of pressure in the tube during hydropiercing process. A higher pressure is very useful for hydropiercing and it can reduce the size of collapse and improve the quality of cross-section. With higher pressure during the piercing process, a better quality cross-section can be got. In addition, the collapse only happens in a given area, and the length of material will also impact the collapse tendency. When the tube length changes in some range, the collapse will change slowly with the increasing of the tube length.

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Reference：

［1］王强. 内高压成形工艺与设备的新进展\[J\].锻压装备与制造技术,2003,38(1):2025.
［2］苑世剑.我国内高压成形技术现状与进展[J].锻压技术,2004,29(3):1-6.
［3］Dohmann F, Hartl C. Liquid bulge forming as a flexible production method[J]. Journal of Material Processing Technology,1994,45: 377-382.
［4］Srinivasan T M, Shaw J R, Thompson K. Tubular hydroforming: Correlation of experimental and simulation results[J]. SAE Technical Paper，No.980448, 1998:22-28.
［5］Dohmann F. Introduction to the processes of hydroforming[J]. Hydroforming of Tubes, Extrusions and Sheet Metals, 2000,(1): 1-21.
［6］Hartl Ch. Theoretical fundamentals of hydroforming[A]. 2nd International Conference on Hydroforming[C].Stuttgart, 1999.
［7］Asnai N, Skogsgrdh A. Theoretical and experimental analysis of atroke-conntroiled tube hydroforming[J]. Journal of Material Science and Engineering,2000,27 (9): 95-110.
［8］Koc M, Altan T. Prediction of forming limits and parameters in the tube hydroforming process[J]. International Journal of Machine Tools & Manufacture,2002, 42: 123-138,
［9］Manabe K, Amino M. Effects of process parameters and material properties on deformation process in tube hydroforming[J]. Journal of Materials Processing Technology,2002, 12(3): 285-291.
［10］韩聪, 苑世剑, 苏海波, 等. 液压冲孔数值模拟[J ].中国有色金属学报, 2006,16(1):22-28.

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