Question

It is not possible to bake dry sand cores by dielectric core bakers.

(a) True

(b) False

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

The query is from Dielectric Core Bakers topic in section Core and Core Making of Casting-Forming-Welding I

Answer 1

The correct answer is (b) False

The explanation is: Dry sand cores are basically produced by heating the green sand cores nearly about 110 ⁰C. These cores have high strength rigidity and excellent thermal stability. These cores can be easily baked by dielectric core bakers and normally stored for a long period of time to make them more stable than the green sand cores. Dry sand cores generally used for large castings production.