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In vacuum die casting, the molten metal enters into the cavity slowly as compared to the die casting.

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in Casting-Forming-Welding I by (687k points)
In vacuum die casting, the molten metal enters into the cavity slowly as compared to the die casting.

(a) True

(b) False

I had been asked this question during an online interview.

The above asked question is from Vacuum Die Casting in portion Special Casting Techniques of Casting-Forming-Welding I

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Right answer is (b) False

The best explanation: The removal of all the gases from the die cavity makes a vacuum inside the cavity, so there is no pressure or force inside the cavity which could be opposite to the injecting pressure of the molten metal. So, the molten metal enters much faster into the die, thereby decreasing the fill time.

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