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The effect of temperature change is generally neglected during the vacuum degassing process.

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in Casting-Forming-Welding II by (119k points)
The effect of temperature change is generally neglected during the vacuum degassing process.

(a) True

(b) False

The question was posed to me by my school principal while I was bunking the class.

I'd like to ask this question from Methods and Materials for Degassing topic in section Foundry Introduction & Materials of Casting-Forming-Welding II

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The correct choice is (a) True

Explanation: The reduction in temperature changes the composition of equilibrium steel and hence mass transfer coefficient changes dynamically. The effect of temperature change is generally neglected during the vacuum degassing process, but the temperature change is analyzed so that the operation does not finish at the low temperatures.

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