Question

Dry sand cores may be required for the provision of spigot at the end section of the casting.

(a) True

(b) False

The question was posed to me during an online interview.

The doubt is from Centrifugal Casting topic in chapter Special Casting Techniques of Casting-Forming-Welding I

Answer 1

The correct choice is (a) True

Explanation: When after the proper ramming of sand to confirm to the outer contour of the pipe to be made, dry sand cores may be introduced for the provision of end details such as spigot ends, or flanged ends to the casting. Meanwhile there is no requirement of any cores for the making of the hollow section of the castings.