| 摘要 |
PURPOSE:To suppress the buckling of a rolling material and to increase cross rolling reduction by curving the rolling material to a specific shape and inclining vertical rolls in the specific direction in the stage of subjecting the rolling material advancing on a table near roller to width adjustment rolling with a pair of the vertical rolls. CONSTITUTION:The rolling material S advancing on the table roller 2 is curvilinearly formed by a forming rolling mill 6 in such a manner that the transverse sectional shape thereof projects downward and thereafter the material is subjected to the width adjustment rolling with a pair of the vertical rolls 1 of an edger rolling mill 3. The rolling material S is further curved downward by the mis-alignment delta between the working point of the rolling load F at the end face thereof and the center of the rolling material S on the roller 2 when the material receives the load F. however, the rolling material S is supported by the rolle 2 and is prevented from buckling so that the large cross rolling reduction is made possible. The crowns of the upper and lower rolls 4, 5 of the mill 6 are required to be taken large to some extent in this case but a problem arises in the engagement, etc. of the rolling material S in such a case. The rolls 1 are thereupon inclined within the vertical plane parallel with the advancing direction of the material S in such a manner that the upper part thereof faces the direction opposite from the advancing direction. |
