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首页> 外文期刊>Journal of Materials Engineering and Performance >Sharp Flanging and Flat Hemming of Aluminum Exterior Body Panels
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Sharp Flanging and Flat Hemming of Aluminum Exterior Body Panels

机译：铝制车身外板的锋利翻边和扁平包边

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Limitations of conventional flanging and hemming technologies require increased radii of flanges and roped hems when aluminum alloys are used for production of closure panels. A new process of flanging has been developed based upon the idea of redistributing plastic strains through the larger area, delivering additional metal into the bending zone, and creating an additional axial compression. Comparison of the newly developed and conventional flanging process indicated that the new process expands the bending ability of aluminum alloy 6111-T4 by allowing an additional 10 percent of prestrain to the panel compared with previous forming operations. The advantages of the new flanging operation can be transferred to the hemming operation by allowing an additional 10 percent of prestrain through the whole sequence of forming and assembly operations. Employment of suggested flanging technology makes possible the flat hemming operation of panels stamped from aluminum alloy 6111-T4 if the thickness of the interior panel is 1 mm or more.
机译：当铝合金被用于生产封闭面板时，传统的翻边和包边技术的局限性要求增加法兰和半径的折边半径。根据在较大区域重新分配塑性应变，将更多的金属输送到弯曲区域并产生额外的轴向压缩这一想法，开发了一种新的折边工艺。新开发的和传统的翻边工艺的比较表明，与先前的成型操作相比，新工艺通过向面板附加10％的预应变来扩展了6111-T4铝合金的弯曲能力。新的翻边操作的优点可以通过在整个成型和组装过程中允许10％的预应变而转移到卷边操作中。如果内部面板的厚度为1 mm或更大，采用建议的翻边技术可以使用6111-T4铝合金冲压的面板进行平整包边操作。

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