高压灭菌器成型大型铝制飞机面板

Mitchell C. Holman
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引用次数: 126

摘要

大型铝板的成形,以获得翼型截面和复杂的曲率用于现代金属飞机和航空航天结构提出了许多问题,不容易解决传统的机械成形方法。德事隆航空结构已经开发出一种成型方法,已被证明是高度可行的形成大型铝板。这种方法称为高压釜时效成型。该方法利用高压灭菌器的热和压力能力以及特殊的工具和技术来增强和利用金属人工老化过程中发生的基本应力松弛现象。本文首先介绍了高压釜时效成形方法背后的概念。通过比较使用的成形机制和残余应力水平,通过时效成形和冷机械成形方法。然后,它将审查通过使用高压灭菌器和特殊工具对时效成形的增强。最后,介绍了高压灭菌时效成形方法的生产应用。
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Autoclave age forming large aluminum aircraft panels

The forming of large aluminum panels to attain airfoil sections and complex curvatures for use in modern metal aircraft and aerospace structures poses many problems that are not easily resolved by conventional mechanical forming methods. Textron Aerostructures has developed a forming method that has proven to be highly viable for forming large aluminum panels. This method is called autoclave age forming. The method uses the heat and pressure capabilities of an autoclave along with special tooling and techniques to enhance and exploit the basic stress relaxation phenomenon that occurs during the artificial aging of metal. This paper begins by describing the concept behind the autoclave age forming method. It continues by comparing the forming mechanisms used and the residual stress levels imparted by age forming and cold mechanical forming methods. Then, it will review the enhancements made to age forming by the use of an autoclave and special tooling. Finally, the paper will conclude by presenting production applications of the autoclave age forming method.

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