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The sides of the pit drag are lined with ____________

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in Foundry and Forging by (110k points)
The sides of the pit drag are lined with ____________

(a) Binders

(b) Bricks

(c) Additives

(d) Refractories

This question was posed to me in an interview for internship.

Question is from Methods of Sand Moulding topic in section Sand Moulding of Foundry and Forging

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Best answer
The correct choice is (b) Bricks

The explanation is: When the molten metal is poured into the cope and drag assembly, the metals start getting solidified and the gases are emitted out. Due to the compactness of the sand, the gases find it difficult to go out. Hence it is lined with bricks t=for east escape of the gases.

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