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Refractoriness of the green sand mould shows _____

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in Casting-Forming-Welding I by (687k points)
Refractoriness of the green sand mould shows _____

(a) High strength

(b) Toughness

(c) High temperature resistant

(d) High porosity

The question was posed to me in an interview.

My question comes from Green Sand Mould topic in portion Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

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Correct answer is (c) High temperature resistant

The best explanation: Refractoriness is the ability of the moulding material to withstand the high temperatures of the molten metal to be poured so that it does not get fused with the metal. The refractoriness of the silica sand is highest. Refractoriness is measured by the sinter point of the sand.

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