Question

What is the minimum pressure required to be given in a squeezing process?

(a) 4 kg(f)/cm^2

(b) 5 kg(f)/cm^2

(c) 6 kg(f)/cm^2

(d) 7 kg(f)/cm^2

This question was posed to me in final exam.

Query is from Molding Machines in chapter Foundry Mechanizations of Casting-Forming-Welding I

Answer 1

Correct option is (c) 6 kg(f)/cm^2

For explanation I would say: In squeezing processes, there is piston used which applies a thrusting force over the sand beneath it. There is air present which gets pressurized in the system. This air pressure, minimum has to be 6 kg(f)/cm^2.