Preliminary Investigation of the Process Capabilities of Hydroforging

Materials

Bandar Alzahrani²  Gracious Ngaile¹ 

[1] Department of Mechanical and Aerospace Engineering, North Carolina State University, 911 Oval Drive-3160 EB3, Raleigh, NC 27695-7910, USA

关键词: hybrid process;    hydroforging;    tube hydroforming process;    lightweight;   

DOI  :  10.3390/ma9010040

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2016 by the authors; licensee MDPI, Basel, Switzerland.