Question

The thickness of the shell is dependent upon the strength required for the mold for the specific metal casting application.

(a) True

(b) False

I had been asked this question in an interview for internship.

The question is from Core and Shell Moulding topic in portion Moulding Machines & Special Moulding Processes of Foundry and Forging

Answer 1

The correct answer is (a) True

The best I can explain: The reaction of the thermosetting resin with hot metal pattern forms the thin shell on the surface of the pattern. The thickness of the mold can be controlled by the length of the time the sand mixture is in contact with the pattern.