Next Article in Journal
The Effect of a Slow Strain Rate on the Stress Corrosion Resistance of Austenitic Stainless Steel Produced by the Wire Laser Additive Manufacturing Process
Previous Article in Journal
Performance Assessment and Chip Morphology Evaluation of Austenitic Stainless Steel under Sustainable Machining Conditions
 
 
Article

Research on Hydraulic Push-Pull Bending Process of Ultra-Thin-Walled Tubes

Key Laboratory of Advanced Forging and Stamping Technology and Science of Ministry of Education, Yanshan University, Qinhuangdao 066004, China
*
Author to whom correspondence should be addressed.
Academic Editor: Koh-ichi Sugimoto
Metals 2021, 11(12), 1932; https://doi.org/10.3390/met11121932
Received: 27 October 2021 / Revised: 24 November 2021 / Accepted: 25 November 2021 / Published: 29 November 2021
Due to their high strength, high performance, and lightweight characteristics, bent tubes are widely used in many high-end industries, such as aviation, aerospace, shipbuilding, automobile, and petrochemical industries. Ultra-thin-walled (thickness-to-diameter ratio t/D < 0.01) bent tubes are more prone to wrinkling, fracture, and cross-section distortion than ordinary bent tubes, which are difficult to form integrally by traditional bending processes. In this paper, a new bending process with combined loading of hydraulic pressure, push, and pull was proposed to provide a new method for the bending of ultra-thin-walled tube. This process is characterized by the ability to optimize the combination of push, pull, and internal pressure according to the actual bending process in order to minimize the wrinkling of ultra-thin-walled tube during bending. Based on ABAQUS finite element (FE) software, the FE model of the hydraulic push-pull bending process for ultra-thin-walled tube was established. The influence of internal pressure, die clearance, and friction coefficient on the forming quality of bent tubes was discussed, and the optimum process parameters were obtained. Bent tubes with an initial thickness of 0.3 mm, diameter of 60 mm, and bending radius of 165 mm were manufactured in experiments. Through the comparative analysis of experiment and simulation, the accuracy of the FE simulation was verified. View Full-Text
Keywords: ultra-thin-walled tube; push-pull bending process; hydraulic pressure; finite element simulation ultra-thin-walled tube; push-pull bending process; hydraulic pressure; finite element simulation
Show Figures

Figure 1

MDPI and ACS Style

Zhang, X.; Zhao, C.; Du, B.; Chen, D.; Li, Y.; Han, Z. Research on Hydraulic Push-Pull Bending Process of Ultra-Thin-Walled Tubes. Metals 2021, 11, 1932. https://doi.org/10.3390/met11121932

AMA Style

Zhang X, Zhao C, Du B, Chen D, Li Y, Han Z. Research on Hydraulic Push-Pull Bending Process of Ultra-Thin-Walled Tubes. Metals. 2021; 11(12):1932. https://doi.org/10.3390/met11121932

Chicago/Turabian Style

Zhang, Xin, Changcai Zhao, Bing Du, Duan Chen, Yang Li, and Zhaojian Han. 2021. "Research on Hydraulic Push-Pull Bending Process of Ultra-Thin-Walled Tubes" Metals 11, no. 12: 1932. https://doi.org/10.3390/met11121932

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop