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How can cracks in casting be avoided?

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in Engineering Material & Metallurgy by (773k points)
How can cracks in casting be avoided?

(a) Soft ramming

(b) Correct pouring temperature

(c) Tapered edges

(d) Correct gating system

This question was addressed to me by my college director while I was bunking the class.

The origin of the question is Casting Processes in division Testing of Materials, Foundry & Powder Metallurgy of Engineering Material & Metallurgy

1 Answer

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Right answer is (c) Tapered edges

Explanation: Cracks in castings occur due to the presence of sharp edges. When these edges are tapered, cracks can be minimized. Ramming, pouring temperature, and gating systems are checked for other kinds of defects.

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