| 摘要 |
<p>PURPOSE:To achieve a high quality rolling by calculating and correcting the roll driving speed of the 1st rolling stand based on the stored rolling load, rolling torque, and sheet width, etc. CONSTITUTION:A rolling load, a rolling torque, and a sheet width are stored in a state of rolling a rolling material by the 1st stand only. Next, in a state that the material is rolled while stretching over both of the 1st and 2nd stands, a changing portion of roll speed is calculated, and an arithmetic processing unit 18 gives a speed correction with respect to a driving motor 8 of the 1st stand to produce a tensionless state.</p> |
