No casting is perfect, but in the effort to achieve some near facsimile of perfection metalcasters are embracing a range of technologies that are outside typical functions of foundries. Heat-treating and impregnation are two notable examples of this. Another is hot isostatic pressing (HIP.) Hot isostatic pressing is used to reduce the porosity and increase the density of castings and other metal parts; additive manufactured or 3D printed parts are an area of some increasing activity for HIP ...

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