| 摘要 |
A roll for rolling which has a base material made from a steel containing 0.60 to 1.1 % of C, 0.15 to 3.0 % of Si, 0.15 to 3.0 % of Mn, 3.0 to 12.0 % of Cr, 0.5 to 5.0 % of Mo and 0.5 to 10 % of Co and, on the surface thereof, a hard coating film formed through a surface modification treatment using the PVD method or the CVD method, wherein carbide grains being dispersed on the surface of the basic material to be treated have a maximum equivalent grain diameter of 20 žm or less. The roll has excellent resistance to wear, seizure and accident, and also is excellent in grindability, and moreover can be manufactured at a low cost, which result in marked improvement in the productivity and the surface quality of steel plates. |
