Metal Technologies has compiled a small glossary to help you familiarize yourself with the language of metal casting. Please select a range of terms from the menu at the left for listings of common metal casting terms and definitions.
Ramming Up: The process of packing the sand in the mold or core box with a rod or rammer.
Rapping: Loosening the pattern from the mold by jarring or knocking.
Rechucking: Reversing a pattern upon a face plate to permit turning the opposite face to the required shape.
Rheocasting: Also called flow casting. A metal forming process in which a semi-solid metal is used to make the casting. The solid metal is heated to a partly liquid, softened state and then pressed into the final form. The finished part has closer tolerances, better surface finish, higher strength, and lighter weight than a similar part made with traditional casting techniques.
Riser: A column of metal placed in the mold to feed the casting as it shrinks and solidifies. Also known as a "feed head."
Rolling Over: Operation of turning flask over to reverse its position.
Runner: The channel through which the molten metal is carried from the sprue to the gate.
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