Final Temperature Prediction Model of Molten Steel in RH-TOP Refining Process for IF Steel Production

In order to precisely control the final temperature of molten steel in RH (Ruhrstahl Heraeus)-TOP blowing refining, the final temperature prediction models of molten steel in RH-TOP blowing refining process for Interstitial Free (IF) steel production were established under the condition of oxygen blowing and non-oxygen blowing respectively. The results show that the beginning molten steel temperature of refining and the amount of added scrap were influential factors, the baking temperature in vacuum chamber was a factor that had small influence. When the model was operated, the hitting probability was above 95 % (under the condition of both oxygen blowing and non-oxygen blowing) of prediction deviation of ±10 °C. The accuracy is analyzed.