Cold shut

the imperfection in a casting caused by the flowing of liquid metal upon partially chilled metal; also, the imperfect weld in a forging caused by the inadequate heat of one surface under working.

cold shut

[′kōld ‚shət] (metallurgy) A surface defect of a metal casting in the form of a discontinuity where two streams failed to unite. Also known as cold lap. Freezing of the top surface of an ingot before the mold is full.

cold shut

In a casting, a defect having the appearance of a fold or wrinkle.

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