| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To manufacture outside width fixed shape steel corresponding to various web outer widths by using normal horizontal rolls without adding a rolling machine. <P>SOLUTION: By performing rough rolling, intermediate rolling of a plurality of passes by reciprocating rolling using a rough universal mill 1 with horizontal rolls 1a, 1b and an edger mill 2 and finishing rolling using a finishing universal mill 4 with width variable horizontal rolls 4a, 4b, the outside width fixed shape steel having a fixed web outer width and a different web inner width is manufactured. The intermediate rolling by the rough universal mill 1 is performed by making axial centers of the upper and lower horizontal rolls 1a, 1b intersect with each other within a horizontal plane, and thus a web thickness of an intermediate rolling material 10 subjected to the intermediate rolling is gradually increased from the center in the web height direction toward a flange. In the finishing rolling, a web 11 of the intermediate rolling material 10 is rolled by the width variable horizontal rolls 1a, 1b. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
