| 摘要 |
FIELD: plastic working of metals, namely processes for rolling sheets in wide strip rolling mill. ^ SUBSTANCE: method comprising steps of heating blank in heating furnace when blank axis is oriented crosswise relative to its motion direction in furnace space and is parallel to axis of roller table of mill; discharging blank onto roller table; performing one or several operations for successive rough reducing of heated blank along its lateral faces in descaler and in stands of rough group and also along upper and lower front faces in rough group stands of mill; then conveying blank to zone of finish group stand of mill for further rolling. One or several stages of initial rough reducing of blank along its lateral faces in descaler and in vertical stands of rough group are performed at motion speed in lengthwise direction of blank lateral face turned to side of furnace equal to 0.985-0.995 of motion speed in lengthwise direction of blank opposite face. Apparatus includes descaler with vertical rolls and several universal rough stands with horizontal and vertical rolls mounted in pairs; finish rolling stands; coiler group. According to invention in one or several vertical stands of rough group including descaler with vertical rolls, diameter of roll mounted at side of furnace is less than diameter of other roll of said roll pair in stand or in descaler. Relation of diameters of said rolls is in range 0.985 - 0.995. ^ EFFECT: possibility for compensating bending of blank caused by non-uniform heating, prevention of cross thickness difference of blank. ^ 2 cl, 2 dwg, 1 ex, 1 tbl |
