Question

There is no need for any external support for the shells at the time of pouring of molten metal.

(a) True

(b) False

The question was posed to me in an internship interview.

My question is from Shell Moulding in section Special Casting Techniques of Casting-Forming-Welding I

Answer 1

Correct option is (b) False

Explanation: Since the shells are thin, and pouring of molten metal into the shells may cause an imbalance which further leads to failure of the castings. So to avoid this, it may require some outside support to withstand the pressure of the molten metal and to form the castings efficiently with proper balance.