Integral Foam Molding - A New Process for Foamed Magnesium Castings
Integral Foam Molding - A New Process for Foamed Magnesium Castings
复制标题
整体泡沫成型——泡沫镁铸件的新工艺
DOI：
10.4028/www.scientific.net/msf.539-543.1827
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
R. Singer
中科院分区：
文献类型：
--
作者：
M. Hirschmann;C. Körner;R. Singer
整体泡沫成型 (IFM) 是一种经济的近净成型技术，可生产具有实心蒙皮、泡沫芯以及蒙皮和芯之间连续密度过渡的整体铸件。它是在 20 世纪 60 年代针对聚合物开发的。但从优化成型技术和聚合物整体泡沫部件的质量到进入市场阶段，花了大约十年的时间。与此同时，聚合物整体泡沫部件也得到了广泛的商业应用。金属的情况则完全不同。几年前才首次尝试生产金属整体泡沫部件。德国埃尔兰根的 WTM 研究所开发了一种经济高效的镁整体泡沫注塑技术。低成本生产与整体泡沫的低密度、高重量比弯曲刚度和显着阻尼能力的特性相结合，非常有前途。一开始我们只生产形状简单的零件，例如板材。但如果我们考虑商业应用，则需要具有三维形状的更复杂的零件。本文的重点是生产具有复杂形状的镁整体泡沫零件（如机壳盖或门把手）的新进展。
Integral foam molding (IFM) is an economical near net-shape technology to produce monolithic castings with solid skin, foamed core and continuous density transition between skin and core. It was developed for polymers in the 1960s. But it took about ten years to optimize the molding technique and the quality of the polymer integral foam parts to a marketable stage. Meanwhile, polymer integral foam parts are established in a lot of commercial applications. The situation is completely different for metals. The first attempts to produce metal integral foam parts were made only a few years ago. A cost effective injection molding technique for magnesium integral foam was developed at the WTM-Institute in Erlangen, Germany. The low-cost production in combination with the integral foam properties low density, high weight specific bending stiffness and remarkable damping capacity is very promising. At the beginning we produced only parts with simple shape, for example plates. But if we think about commercial applications, more complex parts with a three-dimensional shape are required. The focus of this paper is on new developments concerning the production of magnesium integral foam parts with complex shape like a casing cover or a door handle.