cold shut


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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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References in periodicals archive ?
Potential problems in the production of thin-wall castings are misruns and cold shuts.
0 sec) the coldest spot is precisely where cold shuts in the partition were seen on the casting.
For prediction of misruns, cold shuts and other filling-related defects we have a fast CFD solution module called FLOWCast[TM].
For prediction of misruns, cold shuts and other filling-related defects we have an optional fast CFD solution module called FLOWCast[TM].
localized defects--including shrink porosity, cold shuts, hot tears, inclusions, foil, cracks and runout;
Under more severe pouring conditions, such as when using gating systems that produce turbulent flow and can cause cold shuts, lustrous carbon films can be flushed into the body of the casting or become sandwiched between two merging streams of molten metal (Fig.
Rapid cooling of thin wall sections of the casting reduce the fluidity of the molten metal, which could cause the molten metal to prematurely freeze before it can completely fill the mold cavity, resulting in an incomplete fill or cold shuts.
If cold shuts are detected or the fine details of the casting are improperly filled, the sprue cross sectional area should be increased.
The tuning of these parameters also strongly depends on other casting considerations such as porosity, cold shuts and solidification mode.
Lustrous carbon defects usually appear as areas of wrinkled, shiny surfaces that often resemble cold shuts or seams.
As the level of these volatile gases increases, the severity of the defect increases and the lustrous carbon folds into solidifying metal causing unacceptable cold shuts and laps.