论文部分内容阅读
In this work,the magnetic pulse forming process was used to flange the AA 3003-O aluminum alloy tube to improve the flanging formability limit.The results show that there are critical discharge energy values for the flanging dies with varied slope angle.The mechanism of magnetic pulse flanging process is the bulging in contrast to the expanding of the quasi-static flanging.For the flanging with 90 slope degree,the limited hoop strain at the outer fringe could be up to 0.54 without rapture,to which the limit of simple tension limit is improved by 85%in contrast.The 180degree flanging at tube end can be achieved by one time magnetic pulse forming.
In this work, the magnetic pulse forming process was used to flange the AA 3003-O aluminum alloy tube to improve the flanging formability limit. The results show that there are critical discharge energy values for the flanging dies with varied slope angle. The mechanism of magnetic pulse flanging process is the bulging in contrast to the expanding of the quasi-static flanging. For the flanging with 90 slope degree, the limited hoop strain at the outer fringe could be up to 0.54 without rapture, to which the limit of simple tension limit is improved by 85% in contrast. 180degree flanging at tube end can be achieved by one time magnetic pulse forming.