Question

For the removal of cores from the moulding box, caustic bath can be used which is very fast in processing the large and complex cores.

(a) True

(b) False

I had been asked this question by my school teacher while I was bunking the class.

This intriguing question originated from Core Application in chapter Core and Core Making of Casting-Forming-Welding I

Answer 1

The correct answer is (b) False

To explain: For the removal of cores from the moulding box, several methods can be used. But for low cost and minimizing the casting erosion, a caustic bath is used which is also known as mechanical agitation. In this method, a solution of sodium or potassium hydroxide is used for the breaking of a core material. But this method consumes too much time for processing the large and complex cores.