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Heat and the head pressure of molten metal can cause variation in the dimensions of a casting.

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in Casting-Forming-Welding I by (687k points)
Heat and the head pressure of molten metal can cause variation in the dimensions of a casting.

(a) True

(b) False

I had been asked this question in exam.

This intriguing question comes from Dimensional Inspection in portion Inspection Testing in Foundries of Casting-Forming-Welding I

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The correct answer is (a) True

The best I can explain: Heat and the head pressure of molten metal can make a variation in the dimensions of casting, the heating and cooling of molten metal which results into expansion and contraction of it respectively, this changes the volume of a mould cavity and further results into the undesired dimensions of the casting.

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