The Influence of Superplastic Forming Die Contour on Thickness Distribution

• Main Authors: Shiu Hungjiun, 徐宏鈞
• Other Authors: Shyong Lee
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/65415418056440880815

碩士 === 國立中央大學 === 機械工程學系 === 101 === This paper is using superplastic forming technology to produce (original size and small size) medium-sized civil aircraft wing leading edge fairing cover. To analyze the influence of forming method (hot draw mechanical pre-forming and conventional superplastic forming) and die contour on thickness distribution. Before doing the superplastic forming, first, we pre-bend the 5083 aluminum , then make the component according to the required pressure - time forming curves. The purpose of the pre-bend is to shorten the distance between the sheet and the die before doing the superplastic forming, As a results, the thickness of the component will more uniform. After realizing the importance of shorten the forming distance, we decide to add a hot drawing mechanical pre-forming or change the contour of the die to shorten the distance. We hope that the thickness of the component will more uniform.