Question

To avoid difficulties in making of molds, sand should be cooled below what temperature?

(a) 100°F

(b) 120°F

(c) 140°F

(d) 160°F

I had been asked this question in examination.

My question is taken from Molding Sand Preparation in portion Sand Preparation of Casting-Forming-Welding I

Answer 1

Right choice is (a) 100°F

To elaborate: In sand preparation, the requirement of temperature for production is less than 40°C. The said sand, being used for manufacturing, should be cooled down below 100°F to avoid later difficulties in making the molds.