Abstract
In the present paper, the author proposes some useful methods for detecting oxygen in molten steels. The methods are based on the following computations.
1) The change of oxygen in molten steel of acid open-hearth melt may be known by the change of CaO% in the slag.
2) The change of oxygen in molten steel may be calculated by the change of deoxidizing elements, such as C, Si and Mn.
3) Accurate computabion for the boundary conditions such as oxygen before deoxidation, oxidation by flame and bed, amount of oxygen in solidified steels, etc.
