Question

The method of scrubbing or cleaning cannot be used for excessively large castings in a mechanized foundry.

(a) True

(b) False

The question was posed to me in an interview for internship.

This is a very interesting question from Processing Steps in Mechanized Foundry in division Foundry Mechanizations of Casting-Forming-Welding I

Answer 1

The correct choice is (a) True

To elaborate: The method of scrubbing or cleaning is mainly used for removing the gates from the casting; this process uses a scrubbing cylinder which cannot be used for excessively large castings because this process tends to crack the smaller parts of the casting. So, special techniques or more labours are employed for the process.