| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the method for controlling the flange width of a wide flange shape by which right and left flanges are rolled into the target width even at the tip and rear end parts and improved dimensional precision and yield are obtained. SOLUTION: In this method for controlling the flange width of the wide flange shape in a rough universal rolling mill group for rolling wide flange shapes provided with one or more edger mills, rolling is executed by increasing or decreasing independently continuously the right and left opening degree of roll of the edger mill E to the unsteady parts of the tip part and rear end part of a material to be rolled to the set value for the steady part and, next, in the succeeding universal rolling mill, the flanges at the tip and rear end of the material to be rolled are made into the same width as in the steady part.</p> |
