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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^2This question was posed to me in final exam.Query is from Molding Machines in chapter Foundry Mechanizations of Casting-Forming-Welding I

Answer»

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.



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