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The main function of a riser is to maintain the escaping of gases from the casting during solidification.

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in Casting-Forming-Welding I by (687k points)
The main function of a riser is to maintain the escaping of gases from the casting during solidification.

(a) True

(b) False

I had been asked this question in homework.

The doubt is from Riser Design in chapter Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

1 Answer

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Best answer
Correct choice is (b) False

Easiest explanation: Basically, the main objective of the riser is to feed the casting during solidification so that no any kinds of shrinkage cavities are formed in the casting. Type of metal poured and the complexity of the casting is responsible for the requirement of risers in the casting system to produce castings.

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