JPS55141304A - Rolling mill provided with curved intermediate roll - Google Patents

Abstract

PURPOSE:To make possible the control of the sectional shape of the rolled material without frequently interchanging the roll, by giving the horizontal bend to the intermediate rolls of the rolling mill so as to make narrow the gap of intermediate rolls at the middle part, on purpose to adjust the deflection of the work roll. CONSTITUTION:A couple of upper and lower work rolls 2, 3, a couple of upper and lower backup rolls 10, 11, on outside of work rolls 2, 3, and at least a couple of horizontal intermediate rolls 6, 7, between work rolls 2, 3, and backup rolls 10, 11, are arranged. The rolling load impressed on the backup rolls 10, 11, is transmitted to the work rolls 2, 3, through the intermediate rolls 6, 7, and compresses the rolled material 14. Hereupon, by actuating the cylinder-piston mechanisms 16, 17, 18, 19, the intermeidate rolls 6, 7, cause the horizontal elastic deformation, and displace from the solid lined position to the dotted lined position; hereby, the roll gap of the intermediate rolls 6, 7, is made narrower at the middle part than that on both sides. As a result, the roll 2 is deflected into a downward projecting arc shape, and the rolled material 14 receives the compression strongly at its middle part.