Glossary of Casting Terminology "U"
|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.|