Question

Which of the following processes is known as fettling?

(a) Cleaning of castings

(b) Pouring of melt into mould

(c) Releasing of gases from the melt

(d) Inclusion of slag in the castings

I had been asked this question in an online interview.

The question is from Casting Cleaning in section Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Answer 1

The correct answer is:

(a) Cleaning of castings

Explanation: Fettling is the process of cleaning the castings after they have been removed from the mould. It involves removing any unwanted materials, such as excess metal, sand, and other imperfections left behind after the casting process. Fettling ensures that the casting has a smooth surface, is free from defects, and meets the required dimensions before further processing or finishing.