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OEM Casting and Forging


Glossary of Casting Terminology "U"

This glossary lists in alphabetical order casting industry terms and their explanations.

Word/Expression Explanation
undercut When an indentation or protrusion in the pulling direction prevents the casting from being removed when pulling mold surfaces apart.
underfill Also called a chip in die casting, etc., it refers to when mechanical stress applied to a die-cast product causes it to fracture and go missing. It may occur during the casting process (splitting gates, etc.) or during post-cast processing (deburring and the like).
universal testing machine A device for testing the stretch, compression, bending, etc., of a material like a metal.
upper mold A mold attached to the upper plate in casting machines and shell core making machines that open and close vertically.
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