| 摘要 |
<p>PURPOSE:To roll a single-sided crown strip metal by a tandem mill without generating shape failure so that the distribution of thickness on both sides in the direction of plate width approaches symmetry. CONSTITUTION:The side end part in the plate width direction on the thin plate thickness side of the strip metal 1 is positioned at a tapering part 3a by two or more rolling stands wherein the tapering part 3a is formed at one end of the barrel part 3b of one work roll 3 on the upstream side of the rolling stand at the final stage. So that an improved amount h=(ah+b)XWRTXWRdelta to a difference between right and left plate thicknesses indicated by a product of a value (ah+b) introduced from an outlet side plate thickness (h) at the end on the thicker plate thickness of the strip metal 1, constants (a), (b) determined by the roll dimension of each rolling stand, a value WRT=100X2Xtantheta required from a tangent tantheta of the taper angle theta of a taper part 3 and a shift position WRdelta of the work roll showing a distance from a plate side end to the taper starting point T0 of the work roll does not exceed 0.5% of the plate thickness (h) on the outlet side, the shift position WRdelta of the work roll is arranged and set.</p> |
