| 摘要 |
<p>PURPOSE:To make the correction of the side-crown easy, by deciding the roll gap using the computer, and by equalizing the elongations in the directions of the breadth and the length. CONSTITUTION:The asymmetrically side-crowned rolled material is corrected to the symmetrically crowned rolled material with high accuracy at high speed. For instance, in the four-high mill, the side-crown CH of the rolled material 1 on the feed side is detected by the profile meter 2 and is sent to the computer 3. The sheet breadth (b) on the run-out side of the mill is detected by the breadth detector 4 and is sent to the computer 3. The position sensor 5 detects the roll gaps SW, SD, and send them to the computer 3. The draft controller 6 receives the leveling correction value DELTALS operated by the computer 3, and actuates the servo-valve 7 to operate the hydraulic piston 8; hereby, the rolls are set to the decided roll gap and carry out the rolling work. According to this method, the correction of the side-crown can be easily carried out.</p> |
