STUDY OF THE METALLURGICAL ASPECTS OF STEEL MICRO-ALLOYING BY TITAN

摘要

The metal properties upgrading applying it's alloying with the simultaneous limitation of the impurities represents a prospective possibility of the metallurgical production further development. The interaction of the alloying substance active element with oxygen in metal and adjacent multiphase environment occurs under the actual conditions. Present paper is oriented particularly to the thermodynamic aspects of deoxygenation by titan in process of production of micro alloyed low carbon steel in two plants (oxygen converter 1-OC1 and 2-OC2) with the different effect of micro-alloy exploitation. Analysis of the effect of the metallurgical factors on the titan smelting loss in micro-alloyed steel production points at the need to master the metal preparation for the alloying and especially has got the decisive effect upon the oxidizing ability and rate of the slag phase availability. When comparing the micro-alloying matter yield among the individual production units, disclosed have been better results obtained in plant OC2. Confirmed has been the effect of the slag amount (average amount of 7,3 t at OC1 and 5,83 t at OC2) and its quality during the steel tapping as one among the most significant factors affecting the alloying process and which also represent its oxidizing potential.