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Rapid solidification rates of casting tend to have a reduction in oxidation of the material.(a) True(b) FalseThis question was posed to me in an online quiz.This intriguing question originated from Vacuum Die Casting in chapter Special Casting Techniques of Casting-Forming-Welding I

Answer»

The correct answer is (a) True

The explanation is: Rapid SOLIDIFICATION rates of the casting can avoid the oxidation of the material in the vacuum DIE casting (VDC). This is accomplished by providing very thin WALLS (1 to 12 mm) of mould to the casting with close tolerances. Then the PROPERTIES of casting approach to that of wrought product, and with relatively short cycle times.



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