Question

In hot box process, core box is heated up to what temperature?

(a) 220°F – 300°F

(b) 250°F – 320°F

(c) 350°F – 500°F

(d) 420°F – 550°F

The question was asked in an interview for internship.

My question is taken from Types of Cores in portion Core and Core Making of Casting-Forming-Welding I

Answer 1

Right choice is (c) 350°F – 500°F

To explain: In the hot box process, core box is known to be made up of cast irons or steels or aluminium metal. It is heated in between the temperature range of 350°F – 500°F.