| 摘要 |
PURPOSE:To enable the size rolling of a wide range of the inside width of web by making the horizontal roll and vertical roll of roughing mill just before finishing mill into rolls of which the inclination of flange to web is larger as compared to the roll on the upstream side and with which the web height is shortened. CONSTITUTION:About the sectional dimension/shape U1, U2 of the U1 mill and U2 mill of a roughing universal mill and the intervals X1, X2 and X0 of the tip part of flange in an edging mill 3, they are taken as X1 X2 X0. Similarly, by taking as y1 y2 y0 about the leg length y1, y2 and y0 of flange in the U1, U2 and the edging mill 3, edging with either shape of rolls which are moved back and forth is possible. In this way, at the time of making the inside width of web into an arbitary dimension by reducing, the critical range of web buckling of finishing universal mill is extended and the size rolling of a wide range of the inside of web is made possible by forming separately two kinds of the inside width of web at the roughing universal mill. |
