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首页> 外文期刊>Journal of Materials Science >The permeability of Lost Foam pattern coatings for Al alloy castings
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The permeability of Lost Foam pattern coatings for Al alloy castings

机译：铝合金铸件消失模泡沫涂料的渗透性

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摘要

The Lost Foam casting of Al alloys has not yet reached its full potential because of the complexity of the process, and the fact that it is still poorly understood. In this paper, the permeability of typical pattern coatings for the Lost Foam casting of Al was measured, and found to vary from about 0.1 Darcy, (10−13 m2), for a low permeability coating, to about 1 Darcy (10−12 m2), for a high permeability coating. Permeability was reduced by increasing coating thickness, but examination of the coatings on a hot-stage SEM suggested it would be unaffected by increased temperature. The results were used to infer how the filling of a Lost Foam polystyrene pattern could be influenced by the permeability of the pattern coating.
机译：由于该工艺的复杂性以及人们对其了解甚少的事实，铝合金的失泡沫铸造尚没有发挥其全部潜力。在本文中，对用于Al的失泡沫铸造的典型图案涂层的渗透率进行了测量，发现其变化范围约为0.1 Darcy，（10 −13 m 2 ）对于低渗透性涂层，对于高渗透性涂层，约为1 Darcy（10 −12 m 2 ）。通过增加涂层厚度降低了渗透性，但是在热台SEM上检查涂层表明它不会受到温度升高的影响。结果被用来推断Lost Foam聚苯乙烯图案的填充如何受到图案涂层渗透性的影响。

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