investment casting

noun Metallurgy.
a casting process in which an expendable pattern is surrounded by an investment compound and then baked so that the investment is hardened to form a mold and the pattern material may be melted and run off.
Also called precision casting.

1945–50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
The pattern for an investment casting is made in a die of wax, polystyrene, or plastic.
Investment casting is a high precision technique for forming metal shapes, involving the following process.
The investment casting process allows the production of complex-shape parts and close dimensional tolerances.
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