| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metallurgy and can be used in rolling of cold-rolled strips of low-carbon steel at continuous mills with subsequent annealing at in-and-out furnaces. Proposed method comprises charging the indented working rolls with roughness Rof 3-5 mcm into last stand of continuous mill with specified reduction in said stand, reeling the strips and their recrystallisation annealing at in-and-out furnace wherein relative reduction is set equal to 2-5% and, to termination of rolls campaign, it is increased to 18-22% at simultaneous appropriate decrease in reductions at previous stands and set as follows proceeding from the ratio: ?=(2÷5)+0,106·L where L is total length of rolled strip from the begging of working roll campaign in the last furnace, km.EFFECT: higher quality of steel sheet.1 tbl, 3 ex |
