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Theoretical and Experimental Analysis of Hydropiercing
Technical Paper
2003-01-2884
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this study, hydropiercing after hydroforming and prior to unloading was investigated. The primary purpose of this study was to investigate how the used hydropiercing method and the selected material and process parameters affect the hole quality. Hydropiercing inwards, hydropiercing by folding the ‘scrap’ piece inwards and hydropiercing outwards were tested. The tube material was extruded AA6063-T4. The tube diameter and wall thickness were 107 mm and 2.5 mm respectively. Straight 1110-mm long tubes of this material were first hydroformed at 1300 bar and then hydropierced. Assuming that the largest (in magnitude) acceptable deflection at the hole edge is 0.2 mm, hydropiercing inwards at ≥ 1300 bar yield the best hole quality. However, the remaining scrap piece (in the tube) causes a handling problem that must be solved.
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Citation
Asnafi, N., Lassl, G., Olsson, B., and Nilsson, T., "Theoretical and Experimental Analysis of Hydropiercing," SAE Technical Paper 2003-01-2884, 2003, https://doi.org/10.4271/2003-01-2884.Also In
References
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- Asnafi N. Nilsson T. Lassl G. Automotive Tube Bending and Tubular Hydroforming with Extruded Aluminium Profiles Proc. of the International Body Engineering Conference and Exposition (IBEC 2000) Detroit, Michigan, U. S. A. Oct. 3-5 2000
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