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Published in: The International Journal of Advanced Manufacturing Technology 9-10/2022

11-04-2022 | ORIGINAL ARTICLE

Multi-step hydroforming process and wall thickness optimization of 5A02 aluminum alloy five-way tube with different branch diameters

Authors: Liming Wei, Xuefeng Xu, Yubin Fan, Ju Zhang, Congcong Yuan

Published in: The International Journal of Advanced Manufacturing Technology | Issue 9-10/2022

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Abstract

The different branch diameters of five-way tube affect the design of loading internal pressure in the hydroforming process, where the large-diameter branch is broken more easily than the small-diameter one due to the same ultimate stress of tube material in one-step forming method. Therefore, the first four-way and then five-way of multi-step forming (FFTF) method and the first three-way and then five-way of multi-step forming (FTTF) method were proposed to fabricate the 5A02 aluminum alloy five-way tube with two kinds of branch diameters to avoid the burst of large-diameter branch tube. The finite element simulation of five-way tube hydroforming process shows that the height of small-diameter branch tube is lower and serious wrinkles appear at the large-diameter branch tube in the one-step forming and FFTF method. By optimizing the length of punch, a five-way tube with a big branch height and uniform wall thickness was obtained with the FTTF method. The approach of lengthening the punch in the experiment increased the height of formed branch and reduced the wall thickness reduction rate of five-way tube in FTTF method. Overall, the findings mentioned above cannot only offer guide in creating five-way tube with excellent quality, but also be taken as reference to the hydroforming studies on multi-way tube in the future.

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Metadata
Title
Multi-step hydroforming process and wall thickness optimization of 5A02 aluminum alloy five-way tube with different branch diameters
Authors
Liming Wei
Xuefeng Xu
Yubin Fan
Ju Zhang
Congcong Yuan
Publication date
11-04-2022
Publisher
Springer London
Published in
The International Journal of Advanced Manufacturing Technology / Issue 9-10/2022
Print ISSN: 0268-3768
Electronic ISSN: 1433-3015
DOI
https://doi.org/10.1007/s00170-022-09192-2

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