Behavior Analysis of the Aluminum 2017A Sheet Using Vapor Bulge Test
The hot forming of thin structures (plates) uses the temperature as a factor that could increase the forming limits of the sheet metal. On top of the improving of forming limits, increasing temperature induces a decrease of spring- back and a clear reduction of limits loads necessary for the forming operation. The hot forming process is usually done in two independent phases: the first step is the blank heating and the second one is the load application. The present work shows a forming technique based on both temperature and pressure to make a sheet form. These parameters are linked to the water vaporization process into a cavity covered by the blank. This study will try to show:
Experimental aspects of sheets forming under the action of water vapor
Correlation between the blank geometry, level pressure and the forming temperatures.
Performances of the process expressed in terms of:
KeywordsTemperature pressure vaporization forming sheet
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- Yuan, S., He, Z., Liu, G., Wang, X., Han, C.: New developments in theory and processes of internal high pressureforming. The Chinese Journal of Nonferrous Metals 21(10), 2523–2533 (2011)Google Scholar
- Mult, E.H., Geiger, M.: Sheet and tube hydroforming at elevated temperatures. In: International Conference on Hydroforming, Fellbach, Germany, pp. 259–278 (2003)Google Scholar
- Jestwiet, J., Geiger, M., Engel, U.: Metal forming progress since 2000. Journal of Manufacturing Science and Technology, 2008 1(1), 2–17 (2008)Google Scholar