The Research Of BOF Steelmaking Endpoint Static Forecast System

Basic Oxygen Furnace (BOF) Steelmaking is one of the most important processes in the iron & steel producing industry, and the main job of which is to provide the molten steel of which both the composition and temperature hit the tapping aim slot at the steelmaking endpoint. In BOF process, molten steel composition and temperature can't be measured continuously, a large number of impact factors, and operation conditions vary frequently, which makes it difficult to control the BOF endpoint. Now in the most factories, BOF steelmaking endpoint control however in hand, the workers control the system resorting to experience. This way has prodigious uncertainty. In actual BOF steelmaking process, it often happens "done work over again" due to the low control precision, it bring maximum economic lose of corporation. So improving the control precision of BOF steelmaking process is very important. We have the results based on the research of BOF steelmaking production techniques and the locale investigating of the An Shan Bao De Steelmaking Corporation two numbers BOF. we can produce high quality molten steel if we could change load's system institution to fit the change of molten steel, A new BOF steel-making endpoint static state forecast system based on Grey theory is argued in this paper.Steel-making endpoint temperature and carbon content was used research object in this paper. We used Grey arithmetic and linearity arithmetic, the 25 production data were used to model training and the other 15 were used to predict the endpoint temperature and carbon content. The molten steel temperature hitting ratio was 66.75%, the molten steel carbon content hitting ratio was 77.3%,the temperature and carboncontent hitting ratio was 59%, when |ΔT|≤15℃, |ΔC|≤4 ,we see, BOFsteel-making endpoint static forecast model evidence improve endpoint molten steel temperature and carbon content forecast precision.In order to use model in industry product, exploited BOF steel-making endpoint static state forecast system, The system has the function of operation guidance and quality tacking , The system of the intelligent optimizing system and HMI is implemented by the Visual Basic 6.0.system background database used SQL Server 2000 , By the simulation research and run test, it indicated that the BOF steelmaking endpoint static forecast system could improve the BOF steelmaking production and improve the finished molten steel's quality.