Rolling method for strip rolling mill and strip rolling equipment

A rolling method for a strip rolling mill, the strip rolling mill including a pair of upper and lower work rolls, and a drive mechanism for moving the work rolls in roll axis directions, the rolling method comprising the steps of:

• providing at least one control means for controlling a thickness distribution in a width direction of a material being rolled, and
• when the material with a constant width is being rolled, setting axial positions of the work rolls at desired positions and controlling a thickness distribution in a width direction of the material by the control means.

A rolling method for a strip rolling mill, the strip rolling mill including a pair of upper and lower work rolls for rolling a strip, intermediate rolls for supporting each of the paired work rolls, and back-up rolls for supporting each of the intermediate rolls, wherein each of the work rolls is provided with a tapered portion at a vicinity to one end thereof, the tapered portions of the work rolls are arranged on opposite sides of roll bodies thereof with respect to roll axis directions, each of the intermediate rolls is provided with a tapered portion at a vicinity to one end thereof, the tapered portions of the intermediate rolls are each arranged on a side opposite, with respect to a roll axis direction, to the tapered portion of the associated work roll in contact therewith, the rolling method comprising the steps of:

• when the material with a constant width is being rolled, setting axial positions of the work rolls at desired positions and changing axial positions of the intermediate rolls to control a distribution in a width direction of the material being rolled.

A rolling method for a strip rolling mill, the strip rolling mill including a pair of upper and lower work rolls for rolling a strip, intermediate rolls for supporting each of the paired work rolls, and back-up rolls for supporting each of the intermediate rolls, wherein each of the work rolls is provided with a tapered portion at a vicinity to one end thereof, the tapered portions of the work rolls are arranged on opposite sides of roll bodies thereof with respect to roll axis directions, each of the intermediate rolls is provided with a tapered portion at a vicinity to one end thereof, and the tapered portion of one work roll and the tapered portion of one intermediate roll are arranged on opposite sides of roll bodies thereof with respect to roll axis directions on the same upper side as well as on the same lower side, the rolling method comprising the steps of:

• when the material with a constant width is being rolled, setting axial positions of the work rolls at desired positions and changing axial positions of the intermediate rolls to control a distribution in a width direction of the material being rolled.

A rolling method for a strip rolling mill, the strip rolling mill including a pair of upper and lower work rolls for rolling a strip, intermediate rolls for supporting each of the paired work rolls, and back-up rolls for supporting each of the intermediate rolls, wherein each of the work rolls is provided with a tapered portion at a vicinity to one end thereof and tapered portions of the work rolls are arranged on opposite sides of roll bodies thereof with respect to roll axis directions thereof, the rolling method comprising the steps of:

• when the material with a constant width is being rolled, setting axial positions of the work rolls at desired positions by a work roll axial position setting mechanism and changing axial positions of the intermediate rolls by an intermediate roll axial position moving mechanism to control a distribution in a width direction of the material being rolled.