Question

Refractory materials are basically used for strengthening the casting materials used in the casting process.

(a) True

(b) False

The question was posed to me in unit test.

My doubt is from Foundry Fluxes and Refractories in chapter Foundry Introduction & Materials of Casting-Forming-Welding II

Answer 1

Correct answer is (b) False

Easiest explanation: Refractory materials are materials that have high melting points and they basically act as a heat resisting barrier between high and low temperature zones. Refractory materials are useful in constructing structures like boilers, furnaces etc. as they minimize heat losses through the structure during working conditions.