METHOD FOR MAKING STEEL STRIP Russian patent published in 1999 - IPC

FIELD: steel strip production. SUBSTANCE: method for producing steel strip includes steps of continuously casting slab with thickness no more than 100 mm, rolling slab in austenite range to semifinished product with thickness 5-20 mm, cooling semifinished product until temperature lower than Ar3, soaking semifinished product in chamber for equalizing its temperature, rolling product to strip at reduction value more than 50% at least in one pass at temperature lower than Tt and higher than 200 C, where Tt - temperature value corresponding to conversion of 75% of steel to ferrite, and winding strip at temperature more than 500 C. Method allows to use casting process heat in successive technological operations for rolling ferrite strip. EFFECT: enhanced properties of steel strip, possibility of using very compact structure. 7 cl, 2 dwg