Question

At the starting of the casting process, the punch should be lowered down in such a way to form a tight seal.

(a) True

(b) False

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

Question is taken from Squeeze Casting in division Special Casting Techniques of Casting-Forming-Welding I

Answer 1

Right option is (a) True

The explanation is: The punch and die portion are separated at the initial of the casting process and the holding furnace holds the molten metal at the requisite temperature. After the pouring of molten metal into the cavity, the punch is lowered down in such a way that it forms a tight seal to avoid inclusion of any gases to the castings.