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Faster and uneven cooling of hot casting affects the castings badly or may cause several defects in the castings.

Faster and uneven cooling of hot casting affects the castings badly or may cause several defects in the castings. Correct Answer True

When the hot casting is exposed to the air, there is likely to be faster and uneven cooling because of which the casting may wrap, crack or induce thermal stresses beneath the skin. The moulding sand provides a uniform cooling medium for the casting while producing least amount of internal stresses.

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