Question

______________ pressure is recommended in the cold chamber process.

(a) High

(b) Low

(c) Medium

(d) Room temperature

This question was posed to me at a job interview.

This is a very interesting question from Pressure Die Casting topic in chapter Moulding Machines & Special Moulding Processes of Foundry and Forging

Answer 1

The correct option is (a) High

The explanation is: The pressure required to force metal into the die of the cold chamber die casting process is of the order of 200 to 2000 kg/cm² and hence high squeezing action is exerted on the metal while it solidifies.