| 摘要 |
PURPOSE:To execute always stable rolling regardless of the width of a flat steel without changing particularly horizontal rolls by sliding sleeve rolls constituting the horizontal rolls in the transverse direction thereof to adjust the gap between the sleeve rolls to an adequate gap and subjecting the flat steel to intermediate rolling. CONSTITUTION:The sleeve rolls 7 are respectively slid in the transverse direction in conformity with the width, thickness, etc. of a slab 5 subjected to rough rolling until the sleeves are set in the adequate position, then the slab is subjected to the intermediate rolling in a universal mill. The slab 5 rolled by a universal rolling mill 1 in such a manner has an unrolled down part but the slab 5 is thoroughly flattened in succession thereto in a duplex rolling mill 2 where the slab is thoroughly flattened by the horizontal rolls 6 thereof. More specifically, the rolling mill 1 and the rolling mill 2 for edging, etc. are continuously disposed generally in a production line for an H-beam and the mill 2 shown in the figure is straightly usable as the edging mill for this purpose. The change of the horizontal rolls according to the flat plates having difference widths and thickness is not required and the continuous and stable rolling is made possible even with said flat plate according to the above-mentioned method. |
