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The thickness of the permanent mould is _______

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The thickness of the permanent mould is _______

(a) High

(b) Low

(c) Negligible

(d) Moderate

The question was posed to me in a job interview.

The query is from Gravity Die Casting topic in section Moulding Machines & Special Moulding Processes of Foundry and Forging

1 Answer

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Correct choice is (d) Moderate

Explanation: The permanent moulds are made of dense, fine grained, heat resistant cast iron, steel, bronze, anodized aluminum, graphite or other suitable refractories. The thickness is moderate to around 15-50 mm are higher dimensions are avoided.

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