Results 1 to 10 of about 174 (128)
The optimization of a hydroformed tube [PDF]
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
doaj +2 more sources
Investigating the Ultrasonic Assistance in the Tube Hydroforming Process [PDF]
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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Repairing Damaged Screen Pipes with Tube Hydroforming: Experiments and Feasibility Analysis
During oil-well production, there are often cracks, breaks, and perforation corrosion on the screen pipe that can significantly deteriorate sand control and pipe strength. To repair damaged screen pipes, we developed a technique originating from the tube
Shufeng Liu +5 more
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Investigation on the Ultrasonic Tube Hydroforming in the Bulging Process Using Finite Element Method [PDF]
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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Numerical Simulation on Optimization of Process Parameters for Free Bending of Metal Tubes
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
Strain Measurements in Free Tube Hydroforming Process [PDF]
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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Optimization of AL6061‐T6 Tube End Forming Process Using Response Surface Method
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
wiley +1 more source
The hydraulic bulging technology of tubes can provide hollow parts with special‐shaped cross sections. Its manufacturing process can effectively improve material utilization and product accuracy and reduce the number and cost of molds. However, the hydraulic bulging process of parts is very complicated.
Kefan Yang +3 more
wiley +1 more source
Hydroforming patch technology for damaged screen pipes is designed based on tube hydroforming technology, and the methods for determining the forming pressure range and forming defects are selected according to the forming process. The hydroforming patch
Shu-feng Liu +5 more
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Less-loading hydroforming process for large-size hollow components of aluminum alloy
To overcome the problem of welding distortion on conventional multiple segment structures, and the problem of requiring large-scale forming equipment and severe thinning occurs in high-pressure hydroforming process, a novel less-loading hydroforming ...
Xiao-Lei Cui +4 more
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