Patent ID: 8191392

Claim:
A rolling mill roll, of a metal plate rolling mill, the roll being provided with a roll crown formed on a periphery of the roll, wherein the roll crown is defined by a continuous curve having a single local maximum point and a single local minimum point at positions respectively closer to first and second ends of the roll in an axial direction of the roll, the continuous curve consists of a central curve region between the local maximum point and the local minimum point, a first end curve region between the local maximum point and the first end, and a second end curve region between the local minimum point and the second end, the central curve region is expressed by a central function that renders a single inflection point between the local maximum point and the local minimum point, the first end curve region is expressed by a first end function that renders a steeper gradient than that of an extension expressed by the central function, and the second end curve region is expressed by a second end function that renders a gentler gradient than that of an extension expressed by the central function.