Inclusions (Ceramic)

• Missing areas of metal in the casting; appearing as small, round, irregular or angular craters, depressions or cavities of various sizes; typically superficial with traces of ceramic and refractory material

• Indicates that something is present in the mold cavity that prevents the casting from fully filling to the shell; typically ceramic shell debris, bits of the pour cup, or the inner mold surface broke off into the molten metal during pouring and were left behind on the casting surface

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