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Numerical and Experimental Studies on Thin-walled Aluminum Alloy Tube Hydroforming Using Differential Lubrication Method by Congcong Yuan; Xuefeng Xu; Yubin Fan; Lin Huang is a Materials Science article available to read on EtoBox.

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In this paper, it was analyzed that the friction forces that affected the material flow were influenced by the friction coefficient and the load path of internal pressure and feeding in T-shaped tube hydroforming process. Therefore, a novel differential lubrication method was proposed to adjust the material flow through changing the friction coefficient in the asymmetric zone in the T-shaped tube besides the loading path design method. The differential lubrication zones in T-shaped tube were divided, and a method called intermediate semiring differential lubrication was designed. The effects of differential lubrication and traditional uniform lubrication methods on the wrinkle, height of branch tube and wall thickness distribution of the T-tube were investigated under the same loading path of internal pressure and axial feeding. Meanwhile, the differential lubrication methods were also simulated under the different loading paths of the internal pressure and axial feeding. The differential lubrication experiments of T-shaped tubes hydroforming were carried out with fluorosilicone grease and PEFT film as lubrication medium. The simulation and experimental results showed that the diff

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Author

Congcong Yuan; Xuefeng Xu; Yubin Fan; Lin Huang

Publisher

Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC (ISSN 1432-0630)

Published

2020

Language

EN

Field

Materials Science (Physical Sciences)