Question

For casting operation, a metal must be heated to what temperature?

(a) Above solidifying temperature

(b) Above vapourising temperature

(c) Above melting temperature

(d) Above room temperature

This question was addressed to me in examination.

My question is based upon Heating and Pouring in portion Preventive Maintenance in Foundries & Metal Casting Process of Casting-Forming-Welding I

Answer 1

Right choice is (c) Above melting temperature

Easy explanation: For casting operations to take place, the metal to be casted must be heated above the melting temperature. The casting cannot be done at room temperature, as the metal needs to be liquefied first.