Question

Degassing can be carried out by placing ladle containing liquid metal under vacuum.

(a) True

(b) False

The question was asked in an interview.

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

Answer 1

The correct answer is:

(a) True

Degassing is a process used in metallurgy to remove dissolved gases, like hydrogen or oxygen, from molten metal. One method of degassing involves placing the ladle containing the liquid metal under a vacuum, which helps to reduce the gas content by causing the dissolved gases to escape.