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Hydroforming of locally heat treated tubes [PDF]
Journal of Manufacturing Processes, 2014 Abstract In tube hydroforming, the process chain can be very long as it may involve several pre-forming operations (e.g. bending, crushing, end forming, etc.) which are usually followed by an intermediate annealing stage. Conventional annealing is performed in batches and it is often perceived as a long, relatively expensive and non-environmentally ...
IORIO, LORENZO +2 more
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The optimization of a hydroformed tube [PDF]
MATEC Web of Conferences, 2019 The shaping by hydroforming process involves several complex phenomena and presents several types of nonlinearities (geometric, material,...). The development of a hydroforming operation requires a lot of testing to determine with precision the optimum ...
Mohammed Nassraoui, Bouchaib Radi
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Real-Time Simulation of Tube Hydroforming by Integrating Finite-Element Method and Machine Learning
Journal of Manufacturing and Materials ProcessingThe real-time, full-field simulation of the tube hydroforming process is crucial for deformation monitoring and the timely prediction of defects. However, this is rather difficult for finite-element simulation due to its time-consuming nature.
Liang Cheng +5 more
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Journal of Machine EngineeringHollow joints formed through the tube hydroforming process offer superior advantages over traditional forming methods such as casting, welding, sheet metal bending, and cutting.
Nguyen Dac Trung, Vu Duc Quang
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Materials & Design, 2019 Wrinkling defects commonly occur in tube hydroforming (THF) magnesium (Mg) alloy at elevated temperatures when the tube-end and axial-feeding regions of the workpiece are overheated.
T.F. Kong, X.Z. Lu, L.C. Chan
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Numerical Simulation on Optimization of Process Parameters for Free Bending of Metal Tubes
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 Three‐dimensional free bending is a new tube forming technology with continuous variable curvature. In order to improve the forming quality of tube, this paper studies the principle of three‐dimensional free forming system and the numerical calculation of bending moment in detail, and it uses the finite element simulation to model the mechanism in the ...
Xinju Zhang +9 more
wiley +1 more source
Investigation on the Ultrasonic Tube Hydroforming in the Bulging Process Using Finite Element Method [PDF]
Journal of Applied and Computational Mechanics, 2017 In ultrasonic tube hydroforming, the tube is hydro formed while the ultrasonic vibration is applied to the die. Prior studies provide experimental proof that ultrasonic tube hydroforming reduces corner radius, improves lubrication and uniform thickness ...
Mehdi Zarei +3 more
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Optimization of AL6061‐T6 Tube End Forming Process Using Response Surface Method
Modelling and Simulation in Engineering, Volume 2021, Issue 1, 2021., 2021 Tube end closing is a metal forming process that replaces welding processes while closing tubes ends. It depends on deforming a rotating tube using a roller, and therefore, it is also called tube end spinning. The process involves many parameters like contact depth, roller inclination angle, roller diameter, mandrel curvature, and tube rotational speed.
Amr Shaaban +2 more
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Investigating the Ultrasonic Assistance in the Tube Hydroforming Process [PDF]
Journal of Applied and Computational Mechanics, 2017 The purpose of introducing ultrasonic vibrations in the tube hydroforming process is to create more formability by obtaining a lower corner radius, improve thickness distribution of the wall and provide good tribological conditions at the tube and the ...
Mehdi Zarei +2 more
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Strain Measurements in Free Tube Hydroforming Process [PDF]
Archives of Metallurgy and Materials, 2020 The paper presents a method of measuring deformations of cylindrical samples on the testing machine for free tube hydroforming experiments. During experiments a sample made of a thin-walled metal tube is expanded by the internal pressure of the working ...
H. Sadłowska +2 more
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