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Refractoriness of a material should always be greater than its application temperatures.

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in Casting-Forming-Welding II by (119k points)
Refractoriness of a material should always be greater than its application temperatures.

(a) True

(b) False

I have been asked this question at a job interview.

I need to ask this question from Foundry Fluxes and Refractories topic in portion Foundry Introduction & Materials of Casting-Forming-Welding II

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Correct option is (a) True

The explanation: Refractoriness is a property at which a refractory material deforms under its own load. The refractoriness is generally indicated by Pyrometric cone equivalent (PCE). It should always be greater than the application temperatures. Refractoriness is decreased when the refractory material is continuously under loading conditions.

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