| 摘要 |
<p>PURPOSE:To perform the opening correction of a vertical roll by accurately detecting the tip and tail end of a stock to be rolled and the position in the length direction and to obtain a specified plate width by performing the length measurement of the stock to be rolled by installing a measuring roll at the position of the vertical roll and the position at the upper stream side than that. CONSTITUTION:A 1st measuring roll 3 at an upper stream side is first brought into contact with the stock 7 to be rolled fed to the upper stream side of the vertical roll 2 in a hot rough rolling process to start a length measurement by synchronizing the measuring roll 3 with the progressing speed of the stock 7 to be rolled before the tip of the stock 7 to be rolled reaching the vertical roll 2. A 2nd measuring roll 4 at the position of the vertical roll 2 is then brought into contact with the stack 7 to be rolled and synchronized with the progressing speed of the stock 7 to be rolled while the rear end of the stock 7 to be rolled is apart from the measuring roll 3. The opening correction of the vertical roll 2 at the position thereof is performed based on the detection value with measuring the length of the stock 7 to be rolled to perform the width control of the stock 7 to be rolled.</p> |
