| 摘要 |
PURPOSE:To increase considerably an edging rate and to adjust the width of a rolling stock in a large range by passing the rolling stock through the pass having the groove width of edging rolls to execute edge rolling while holding the rolling stock with said pass meeting the thickness of the rolling stock then rolling the stock with horizontal rolls. CONSTITUTION:The rolling stock 12 is first rougly rolled by a roughing mill 10 and thereafter the fluctuation in the sheet width occuring the so-called skid marks generated by such rolling is eliminated in the following manner: Both edges of the rolling stock after said rough rolling are passed through any among the passes 8a, 8b, 8c and 8d of the edging rolls 1 according to the thickness thereof, by which the fluctuation in the sheet width is corrected. Both edges of the rolling stock in the case are not expanded and deformed more than the groove width of said pass. The width increase generated by the horizontal rolls of the subsequent finish rolling mill 11 is therefore made considerably smaller than the increase by the conventional edging rolling. |
