Question

Concave, convex and plane types of metal mould interfaces are mainly considered for the estimation of freezing time of metal.

(a) True

(b) False

I got this question in an interview.

The doubt is from Solidification of a Large Casting in an Insulating Mould in section Cooling and Solidification of Casting-Forming-Welding I

Answer 1

Correct answer is (a) True

For explanation: During the solidification of casting material in the mould, concave, convex and plane types of metal mould interfaces are mainly considered for the estimation of freezing time of molten metal. These types of interface show the different direction of heat transfer from the casting material to the mould.