Question

In the case of coldbox core _____________

(a) The core mix is heat treated in order to cure it

(b) Core mix immediately gets cured after sand is blown

(c) Time is given to the core mix to be cure

(d) Cold water is poured onto the core mix

The question was asked in exam.

My enquiry is from Finishing of Cores topic in division Core and Core Making of Casting-Forming-Welding I

Answer 1

Correct option is (c) Time is given to the core mix to be cure

The explanation is: Due to high production rates, the coldbox are left alone to cure by itself after the sand is blown into the corebox.