Question

Which of the following processes is most suitable for the casting of connecting rods and pistons of the automobile?

(a) Precision investment casting

(b) Gravity die casting

(c) Shell moulding

(d) Centrifugal casting

The question was posed to me during an interview.

My question is taken from Gravity Die Casting in chapter Special Casting Techniques of Casting-Forming-Welding I

Answer 1

Right option is (b) Gravity die casting

For explanation I would say: As a simple shape of the casting can be produced by gravity die casting, so conventionally gravity die casting is best suited for casting connecting rods and pistons of the automobile. Many other components like stators, gear blanks, aircraft fittings etc. can also be produced easily by gravity die casting.