Question

For removing cores from the castings, the hydraulic cleaning method is much safer than the method of caustic bath.

(a) True

(b) False

I got this question during a job interview.

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

Answer 1

The correct choice is (a) True

For explanation I would say: In the caustic bath or mechanical agitation, some chemicals are used which are generally associated with the high level of health, safety and environmental risks. So to avoid such types of risks and to perform safer, hydraulic cleaning method is used in which a high pressure water jet is used which erodes the core particles from the casting part.