| 摘要 |
PURPOSE:To improve the effect for reducing generation of draw-in 4, and to enhance reponding speed, by detecting the shape of a material before rolling, and supplying selectively rolling oil of low and high concentration respectively. CONSTITUTION:When a malformation of a hot strip 4 is detected by a shape detector, rolling oil of a high concentration is supplied only to a partitioned chamber 11 of a header 1 corresponding to a part of the strip where an elongation is insufficient so as to have only the high-concentration rolling oil counted on to the specific part 61 of a work roll 6 of a rolling mill. As a result, only the insufficiently elongated part at the tail end part of strip is stretched to correct is to have a normal shape. Further, in ordinary rolling, a comparatively low-concentration rolling oil is used, and when a shape corrective rolling is required, a comparatively high-concentration oil or both of the high and low- concentration oils are used. |
