| 摘要 |
Disclosed is a hot rolling method and a hot strip mill which can manufacture a thin strip easily, while attaining a low energy consumption and a high productivity. In a hot rolling method such that at least a continuous casting installation (7), a tunnel furnace (14), a rolling mill (10), a strip shear (11) and a down coiler (6) are arranged in sequence; a single slab manufactured by the continuous casting installation is kept warmed or heated by the tunnel furnace; the slab taken out of the tunnel furnace is rolled to a target strip thickness by the rolling mill; the rolled strip is coiled by the down coiler; and the rolled strip is cut off plural times so that the coiled rolled strip becomes a predetermined length, the target strip thickness on the outgoing side of the rolling mill is changed under rolling conditions, in order to manufacture a plurality of coils of different strip thicknesses from the same rolling plate. Further, when the rolling machine is composed of a roughing mill (12) and a finishing mill (13), the roughing and finishing mills are arranged close to each other; the slab kept warm or heated by the tunnel furnace is rolled to a bar having a target thickness by the roughing mill; the bar is continuously rolled to a target strip thickness by the finishing mill; and the bar thickness is changed in the roughing mill and/or the target strip thickness is changed in the finishing mill, under rolling conditions, in order to manufacture a plurality of coils of different strip thicknesses from the same rolling plate. <IMAGE> |
