THE NITROGEN CONTENT MANAGEMENT IN THE OXYGEN CONVERTER STEELMAKING

The nitrogen belongs to elements which have significant impact in steel mechanical properties. The influences of individual elements on the properties of solution of nitrogen in the metal bath, on the process of nitrogen dissolution in connection with decarburisation process and also influences of some important factors on the possibilities of nitrogen regulation during the refining period were investigated in this work. The path for production of steel with regulated nitrogen content relies on the combination of knowledge of nitrogen thermodynamics, mechanism and kinetics of nitrogen sorption and desorption, together with possibilities of steel melt properties prediction and also with metallurgical actions leading to the control of required chemical composition.