| 摘要 |
<p>PURPOSE:To improve production efficiency and product quality by performing the motor control of a skin pass mill by the tension of a metallic band plate when a roll is screwed down and the rotational speed when the roll is released. CONSTITUTION:The motor control of the skin pass mill 3 of a process line for metallic band plate 1 should be performed by either of the tension value of metallic band plate 1 or the value of rotational speed of skin pass mill roll 3. And, the state of rolling-down or release of the skin pass mill roll 3 is judged and the motor for the skin pass mill roll 3 is controlled so that the tension of the metallic band plate becomes a specified value in the former case and so that the rotational speed of the skin pass mill roll 3 becomes a specified value in the latter case. In this way, the stoppage of the process line for metallic band plate and the deterioration of thickness accuracy are prevented and production efficiency and product quality can be improved.</p> |
