| 摘要 |
PURPOSE:To obtain a thin steel sheet having the material characteristics and surface characteristics approximate to the characteristics of a cold rolled steel sheet while preventing the increase of rolling torque by rolling the steel sheet with a hot reversing mill then with a warm reversing mill. CONSTITUTION:The steel sheet 6 un-coiled from a coiling and un-coiling machine 4 is rolled by the hot reversing mill 1 and is coiled by a coiling and un-coiling machine 5 while the warm reversing mill 2 is held open and a cooler 3 is held closed. The coiled steel sheet 6 is un-coiled from the machine 5 and is rolled by the hot reversing mill 1, then the rolled sheet is coiled by the machine 4. The steel sheet is then un-coiled from the machine 4, is rolled by the hot reversing mill 1, is cooled by the cooler 3 and is coiled by the machine 5. The steel sheet 6 un-coiled from the machine 5 in the open state of the mill 1 is cooled down to the prescribed warm rolling temp. by the cooler 3 and is then rolled by the mill 2 and is coiled. The steel sheet 6 un-coiled from the machine 4 is rolled by the mill 2 and is taken up on a take-up machine 7.
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