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首页> 外文会议>Symposium on Cellular Metals and Polymers; 20041012-14; Furth(DE) >Detachable fasteners for aluminium foams
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Detachable fasteners for aluminium foams

机译：泡沫铝的可拆卸紧固件

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摘要

The present paper highlights results from the priority program "Cellular Metals" of the Deutsche Forschungsgemeinschaft (DFG SPP 1075). The availability of detachable fasteners for aluminum foams enables the production of complex components made of simple modules which can be produced in a job loss process. Furthermore additional reattachments can be fixed in foamed structures. The skin of foamed parts is thin and has poor mechanical properties for fixing fasteners by gluing, so that large areas are necessary to achieve high tensile and sheer strength. Aim of this work is the fixation of fasteners using foamable precursor material basing on magnesium. The fastening elements, M4 tapped bush, are inserted in a ring of foamable magnesium precursor material and placed in a drilled hole of the aluminum foam. By foaming the magnesium precursor material using an infrared heating system a mechanical clamping as well as metallurgical joining zone is obtained between the aluminum fastening element and the aluminum foam. Mechanical tests have been carried out. The tensile strength of the detachable fasteners is higher than 2kN.
机译：本白皮书重点介绍了德国科学基金会（DFG SPP 1075）的优先项目“蜂窝金属”的结果。用于铝泡沫的可拆卸紧固件的可用性使得可以生产由简单模块制成的复杂组件，这些组件可以在失业过程中生产。此外，可以将其他重新连接固定在泡沫结构中。泡沫部件的表皮很薄，机械性能差，无法通过胶粘固定紧固件，因此需要大面积才能获得高拉伸强度和剪切强度。这项工作的目的是使用基于镁的可发泡前体材料固定紧固件。紧固元件（M4螺纹衬套）插入可发泡镁前体材料的环中，并放置在铝泡沫的钻孔中。通过使用红外加热系统使镁前体材料发泡，可以在铝紧固元件和铝泡沫之间获得机械夹持以及冶金连接区域。机械测试已经进行。可拆卸紧固件的抗拉强度高于2kN。

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