| 摘要 |
<p>In a method of operating a rolling mill there is a measurement stage in which the rolls are rotated under load with the roll gap reduced to zero for a period of time equal to at least one beat cycle of the operative rolls (the work rolls in a two high mill and the back-up rolls in a four high mill) and a signal representative of the sum of the eccentricities of these rolls, and signals representative of the angular position of each of these rolls are supplied to a computer programmed to calculate and store, for each roll, data representative of the eccentricity at specific points spaced equally around its periphery. Following the measurement stage there is a correction stage during which material is rolled in the mill and signals representative of the sum of the eccentricities of the operative rolls are supplied from the computer in synchronism with the rotation of the rolls to roll gap adjusting means to adjust the roll gap so as to compensate for eccentricity of the rolls.</p> |
