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Innovative joining methods for lightweight designs, Part II

机译：轻量化设计的创新连接方法，第二部分

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The presented innovative joining methods allow for flexible manufacturing of lightweight frame structures in limited-lot production. They enable an economic production process and lead to a lower structure weight.rnExperiments show the weldability of steel reinforced aluminium profiles by using friction stir welding. This method is able to join the aluminium matrix material, but does not connect the reinforcing elements. The pre-treatment (sawing, milling) of the specimen has no significant influence on the joint strength. The aluminium alloy EN AW-6060, which is nearly impossible to fusion weld, can be joined by using bifocal hybrid laser welding. It could be shown that tube-tube-I-joints can be produced with 93% of the tensile strength of the tubes by using an end crater reduction strategy. For modern joining by forming processes an undeniable necessity for dedicated structuring of the surface of the joining zone exist. The knowledge of the interrelation between specific surfaces and the resulting effects on the quality of the joint allows for the configuration of a flexible process chain for machining and joining lightweight frame structures.
机译：提出的创新连接方法可以在批量生产中灵活地制造轻型框架结构。它们使经济的生产过程成为可能，并降低了结构重量。rn实验表明，通过搅拌摩擦焊可以显示出钢增强铝型材的可焊性。该方法能够连接铝基材料，但不连接增强元件。样品的预处理（锯切，铣削）对接缝强度没有显着影响。几乎不可能进行熔焊的铝合金EN AW-6060可以通过使用双焦点混合激光焊接来连接。可以证明，通过使用减小端部缩孔的方法，可以在管的抗张强度的93％的情况下生产出管I接头。对于通过成形工艺进行的现代连接，不可否认的是，必须对连接区域的表面进行专门的结构化处理。了解特定表面之间的相互关系以及由此产生的对接头质量的影响，可以配置用于加工和连接轻型框架结构的柔性工艺链。

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