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When a blind riser is used in making of casting, the molten metal cools ________________

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in Foundry and Forging by (110k points)
When a blind riser is used in making of casting, the molten metal cools ________________

(a) Rapidly

(b) Moderately

(c) Slowly

(d) Quickly

I got this question during a job interview.

My question is taken from Types of Risers topic in chapter Concept of Gating and Risering of Foundry and Forging

1 Answer

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Best answer
The correct answer is (c) Slowly

The best I can explain: The blind riser is surrounded by sand from all the sides in order to be used in the casting. Due to the presence of this sand the metal in the riser cools slowly. The cooling also depends on the type of metal used.

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