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Open AccessFeature PaperArticle

Preliminary Investigation of the Process Capabilities of Hydroforging

Department of Mechanical and Aerospace Engineering, North Carolina State University, 911 Oval Drive-3160 EB3, Raleigh, NC 27695-7910, USA
Author to whom correspondence should be addressed.
Academic Editor: Nooman Ben Khalifa
Materials 2016, 9(1), 40;
Received: 8 November 2015 / Revised: 23 December 2015 / Accepted: 6 January 2016 / Published: 12 January 2016
(This article belongs to the Special Issue Forming of Light Weight Materials)
Hydroforging is a hybrid forming operation whereby a thick tube is formed to a desired geometry by combining forging and hydroforming principles. Through this process hollow structures with high strength-to-weight ratio can be produced for applications in power transmission systems and other structural components that demands high strength-to-weight ratio. In this process, a thick tube is deformed by pressurized fluid contained within the tube using a multi-purpose punch assembly, which is also used to feed tube material into the die cavity. Fluid pressure inside the thick tube is developed by volume change governed by the movement of the punch assembly. In contrast to the conventional tube hydroforming (THF), the hydroforging process presented in this study does not require external supply of pressurized fluid to the deforming tube. To investigate the capability of hydroforging process, an experimental setup was developed and used to hydroforge various geometries. These geometries included hollow flanged vessels, hexagonal flanged parts, and hollow bevel and spur gears. View Full-Text
Keywords: hybrid process; hydroforging; tube hydroforming process; lightweight hybrid process; hydroforging; tube hydroforming process; lightweight
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MDPI and ACS Style

Alzahrani, B.; Ngaile, G. Preliminary Investigation of the Process Capabilities of Hydroforging. Materials 2016, 9, 40.

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