The effect of the key process parameters in the innovative hydroforming on the formed parts

Due to the less of the knowledge about the sheet hydroforming, although the sheet hydroforming has gained more and more attentions in the world, it is quite difficult to be applied in the mass volume production. Based on the proposed innovative sheet hydroforming with uniform blank holding pressure, focused on the roundness, surface roughness, etc., using the materials of aluminum alloys, the key process parameters’ effect on the quality of the formed parts were investigated and the ways to improve the sheet formability and the quality were discussed in both experiment and simulation and some good results have been obtained. It proves that the simulated results keep reasonable agreement with the experiment.