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Which of the following methods of casting is best suited for casting aluminium and magnesium based alloys?

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Which of the following methods of casting is best suited for casting aluminium and magnesium based alloys?

(a) Centrifugal casting

(b) Low-pressure die casting

(c) Shell moulding

(d) Investment casting

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Question is taken from Low Pressure Die Casting in section Special Casting Techniques of Casting-Forming-Welding I

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Correct answer is (b) Low-pressure die casting

The best explanation: Low-pressure die casting has been adopted generally for the casting of aluminium and magnesium based alloys. Usually a permanent mould or sand moulds are also possible, but this method makes the casting totally free from shrinkage defects and also ensures proper solidification naturally.

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