Relative to the dimensions of the casting, the pattern that determines the geometry of the casting in expendable mold processes is usually made
Oversized
A riser in a sand casting mold is a reservoir in the mold that serves as a source of liquid metal to compensate for shrinkage of the casting during solidification
True
Solidification shrinkage occurs in all metals with the exception of which one of the following
cast iron with high carbon content
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