Question

Up to what thickness can hot box process can be used for production?

(a) 10 mm- 40 mm

(b) 30 mm- 50 mm

(c) 40 mm- 80 mm

(d) 70 mm- 100 mm

The question was posed to me in a national level competition.

The origin of the question is Cast Irons in chapter Foundry Introduction & Materials of Casting-Forming-Welding II

Answer 1

The correct option is (d) 70 mm- 100 mm

The explanation is: In hot box process, there is a core box employed, wherein the sand mixtures are poured along with the liquid resins, which act as binders. The thickness up to which hot box process can be used is 70 mm to 100 mm.