ENHANCEMENT OF PERFORMANCE AND SAVING OF HEAT-ENERGY IN THE PRODUCTION OF HOT STRIP

Research into the various factors influencing the energy consumption o f the reheating furnaces showed that the consumption can be reduced by installing modern charging-end doors. The practice of hot-charging wa s simulated with the aid of a computation method. It was possible, by means of a newly designed insulating hood, to achieve an optimized tem perature for charging the slabs into the rolling mill furnaces. The ba sic relationship between the hot rolling conditions and properties of the batch-annealed cold strip was interpreted on the basis of the setp oints selected for furnace soaking times and the AlN solution temperat ure. Concluding mill trials aimed at a finishing temperature below A(r 3), as well as cementite and microstructure examinations, showed that it is possible to produce batch-annealed cold strip with good material properties and, in particular, a high r-value, also when the rolling temperatures are extremely low.