Patent ID: 7913531

Claim:
A roll profile for work rolls for both shape control and free ruled rolling, each of the work rolls being a roll having a tapered end, wherein providing an intersection point between the axial extending line of the maximum outer contour of the roll body and the extending line of the end surface of the tapered end being origin of coordinates, the curve of respective tapered end is represented by: y ( x )= a 0 +a 1 x+a 2 x 2 +a 3 x 3 +a 4 x 4 , x∈[ 0 ,Le], y ( x )∈[0 ,He] here: x: the axial distance of the tapered curve; y: the radial distance of said tapered curve; Le: the length of the tapered end of work rolls, in the range of 200˜600 mm; He: the height of the tapered end of work rolls, in the range of 200˜700 μm; a 0 , a 1 , a 2 , a 3 , a 4 : the coefficient of each order term of the roll profile, in the range of: a 0 =200˜700; a 1 =−10˜0; a 2 =0.0001˜0.1; a 3 =E−10˜E−20; a 4 =−E−14˜−E−20.