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Degassing process during the formation of castings can prevent inclusion of hydrogen absolutely.

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in Casting-Forming-Welding II by (119k points)
Degassing process during the formation of castings can prevent inclusion of hydrogen absolutely.

(a) True

(b) False

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

Question is taken from Foundry Fluxes and Refractories topic in division Foundry Introduction & Materials of Casting-Forming-Welding II

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The correct option is (b) False

Best explanation: After degassing process, the hydrogen does not stop coming in the casting material. This can only be controlled by using fluxes in the casting material but it is always recommended to determine the gas quantity before casting process, a device called reduced pressure gas determination equipment is then used for determining the gas content.

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