| 摘要 |
<p>PURPOSE:To prevent the generation of the error of outside diameter due to the wear of caliber roll by determining wear quantity that is caused on the caliber roll of a prescribed stand and correcting the drawing down position based on this result. CONSTITUTION:Wear quantity that is caused on the caliber rolls 10, 10 of the object stand S6, e.g., for adjusting the drawing down position is predicted using a nonlinear function that the cumulative number of rolled tube or cumulative rolling-down load of these caliber rolls 10, 10 are taken as variables. The generation of the error of outside diameter due to the wear of caliber roll is prevented beforehand by correcting the drawing down position of the caliber rolls 10, 10 from this result.</p> |
