Question

Cores are generally made of relatively low strength for better utilization in the production of castings.

(a) True

(b) False

The question was asked during a job interview.

Origin of the question is Core Application in chapter Core and Core Making of Casting-Forming-Welding I

Answer 1

Right option is (a) True

To explain I would say: In general, cores are made of two types which are green sand cores and dry sand cores, and both types of cores are made of relatively low strength than that of mould. This is basically done for easy removal of cores after solidification of castings so that the cores are easily break off and removed from the casting part.