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The pressure is obtained by which of the following methods in pressure die castings?

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in Foundry and Forging by (110k points)
The pressure is obtained by which of the following methods in pressure die castings?

(a) Mechanical

(b) Hydraulic

(c) Pneumatic

(d) Electromagnetic

This question was posed to me during an online interview.

This intriguing question comes from Pressure Die Casting in chapter Moulding Machines & Special Moulding Processes of Foundry and Forging

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Best answer
The correct choice is (b) Hydraulic

For explanation: In the pressure die casting process, the molten metal is forced into the permanent mold or dies cavity under pressure. The requirement for pressure is high. The pressure is generally obtained by compressed air or by hydraulic methods.

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