| 摘要 |
PURPOSE:To improve quality by detaching rollers from sheets just before the joint position of metal strips enters a roller leveler in accordance with the measured value obtd. by measuring the joint position with a length measuring instrument before the roller leveler and controlling a rolling reduction to an optimum value after the passage therethrough. CONSTITUTION:The signals corresponding to the strips Sa and Sb are outputted by the measuring instrument 2 to an arithmetic unit 3. The arithmetic unit 3 processes the signals from the measuring instrument 2 and outputs the same to a rolling reduction controller 4 which controls the rolling reduction to detach the rollers from the sheets just before the joint position enters the roller leveler 6 and to make the operation under the conditions suitable for Sb after the passage therethrough. Productivity is thereby improved.
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