Question

What should the temperature ideally be to remove the casting after making of magnesium alloys?

(a) Below 450°C

(b) Below 300°C

(c) Below 350°C

(d) Below 300°C

I got this question by my school teacher while I was bunking the class.

Question is from Magnesium Alloys in section Foundry Introduction & Materials of Casting-Forming-Welding II

Answer 1

Correct option is (d) Below 300°C

To explain I would say: It is always advisable that the castings should never be removed too quickly, as it might lead to distortion of the cast because it is still hot. Therefore, when the temperature of the cast is below 300°C, the magnesium alloy cast can be removed.