Influences of Process Parameters on Springback of 7075 Aluminum Alloy During Creep Age Forming

The creep age forming experiment of 7075 aluminum alloy was conducted, and the influences of aging temperature, aging time and die surface radius on springback of the aluminum alloy after creep age forming were analyzed by orthogonal experiments. The results show that the creep age forming parameters listed in descending order of effect on the springback was aging temperature, aging time and die surface radius. With the aging temperature of 190 ℃, aging time of 15 h, and die surface radius of 300 mm, the best forming efficiency was obtained, and the springback rate reached the minimum value of 29.43%. With the other process parameters constant, the springback rate decreased with the increase of aging temperature and first decreased rapidly then tended to be stable with the increase of aging time.