Application of siverts law to the study of heat and mass transfer processes during the molten metals degassing from dissolved nitrogen in an electrostatic field of subcritical strengths

In computer simulation of heat and mass transfer at metals ladle degassing (with a sufficiently high melting point) from the dissolved nitrogen in electrostatic field of subcritical tensions, there is a problem of statement of a boundary condition to the equation of convective diffusion on border “vacuum - metal”. The purpose of computer simulation was the technology optimization. Classical form of the Siverts law doesn’t consider the external impact on fusion. The authors offer the generalizing record of this law which includes tension of the electrostatic field and extent of atoms ionization of nitrogen dissolved in metal in upper layer of this border. Its correctness is confirmed by three-criteria check.