DOI: 10.4028/www.scientific.net/kem.410-411.315
View full text
Tomoyoshi Maeno, Kenichiro Mori, Kouji Fujimoto

Abstract: A hot gas bulging process of an aluminium alloy tube using resistance heating, set into a forming machine, was developed. The tube was rapidly heated by the electrifying to increase the formability and to decrease the flow stress. The tube was bulged by thermally expanding the air sealed in the tube without control of internal pressure during the forming. Hot gas bulging of an aluminium alloy tube without and with axial feeding was performed. The effects of the initial internal pressure and the current on the …

expand abstract