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Digital x-ray system images EPS foam

机译:数字X射线系统图像EPS泡沫

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摘要

X-ray radiography technology can be used to characterize expanded polystyrene (EPS) foam as used in the lost-foam-casting (LFC) process. This equipment also can be used to image other low-mass, low-attenuation materials, including graphite, polypropylene, and polyvinyl chloride foams, as well as composites. The LFC process is a relatively new casting technology that is experiencing widespread use. An EPS foam pattern is coated with a refractory material and surrounded by sand. When molten metal is poured into the pattern, the foam degrades and passes through the coating and into the sand. The metal solidifies, taking on the exact shape of the original foam pattern. The LFC process enjoys wide use in complex, thin-wall, near-net-shape nonferrous castings. For example, many General Motors engine blocks and heads as well as all currently manufactured outboard marine engines from Mercury Marine and Bombardier are cast using this process.
机译:X射线射线照相技术可用于表征消失模铸造(LFC)工艺中使用的膨胀聚苯乙烯(EPS)泡沫。该设备还可用于成像其他低质量,低衰减的材料,包括石墨,聚丙烯和聚氯乙烯泡沫以及复合材料。 LFC工艺是一种相对较新的铸造技术,正在广泛使用。 EPS泡沫图案涂有耐火材料,并被沙子包围。当将熔融金属倒入模型时,泡沫会降解并穿过涂层并进入沙子。金属凝固,呈现出原始泡沫图案的确切形状。 LFC工艺在复杂的薄壁,近净形有色铸件中得到广泛使用。例如,许多通用汽车的发动机缸体和缸盖,以及目前由Mercury Marine和Bombardier制造的所有舷外船用发动机都是采用这种工艺铸造的。

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