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______________ contributes towards the baked strength of molding sand.

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in Foundry and Forging by (110k points)
______________ contributes towards the baked strength of molding sand.

(a) Natural Resin

(b) Carbon

(c) Olivine

(d) Core Oil

The question was posed to me in exam.

This key question is from Types of Binders in the Moulding Sand, Types of Base Sand in chapter Casting Processes of Foundry and Forging

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Correct answer is (d) Core Oil

Best explanation: The vegetable oils, mineral oils are regarded as the core oils. Their content in the sand varies from 0.5% to 3.0% by weight and hence they contribute to in increasing baked strength of molding sand.

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