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______________ is a defect caused by loose dowels.

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+1 vote
in Foundry and Forging by (110k points)
______________ is a defect caused by loose dowels.

(a) Mould Shift

(b) Scab

(c) Drop

(d) Blow holes

This question was posed to me in an online quiz.

My question is from Casting Defects in portion Concept of Gating and Risering of Foundry and Forging

1 Answer

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by (736k points)
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Best answer
The correct choice is (a) Mould Shift

Easiest explanation: Mould shift produces a casting which does not match at the parting line. There is mismatching of the top and bottom parts of the casting at the mould joint due to worn out, loose, bent or ill-fitting of the clamping pins.

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