Question

To produce core at room temperature, special binders and air-set sands are used.

(a) True

(b) False

This question was posed to me in an interview for internship.

This key question is from Binders used in Making Cores topic in chapter Sand Moulding of Foundry and Forging

Answer 1

Correct option is (a) True

Explanation: The air-set sands are used to produce cores at room temperature. The sands do not require the gas catalyst because the curing catalyst and organic binders are mixed together already in the sand that initiates the curing process at room temperature.