Explanation

Deoxidation, dehydrogenation and denitrification of liquid steel or liquid alloy under vacuum conditions. It is the main means to improve the quality of steel and its mechanical and other physical properties. The vacuum condition can reduce the partial pressure of the relevant gas and thus the water solubility of the gas in the steel liquid; Under vacuum condition, the carbon oxygen reaction agitates the liquid steel violently, which can promote the gas discharge. The surface area of liquid metal, stirring intensity, bubble nucleation rate, diffusion and other factors will affect the degassing effect. RH, DH, ladle argon blowing, trickle degassing, vacuum casting and other processes are special degassing methods, while vacuum melting, vacuum secondary metallurdy and other processes also have functions.

Classification