| 摘要 |
<p>PURPOSE:To manufacture a hot rolled sheet excellent in surface characteristics with economically high efficiency by arranging a reversible rough roll mill and reversible finishing mill at a distance where a rolled stock can reach the finishing mill at the only final pass of rough rolling. CONSTITUTION:The final pass in the reversible roughing mill 9 is simultaneously performed by interlocking it with the first pass in the reversible finishing mill 12 while the rolled stock is coiled with the furnace coiler 12b on the outlet side of the finishing mill 12 from the arrangement relation of the reversible rough roll mill 9 and reversible finishing mill 12. In this way, the miniaturization of equipment and the reduction of the heat dissipation quantity from the rolled stock are enabled. And, when the rolled stock is made to enter the finishing mill 12, descaling is executed over the entire length of the rolled stock with a descaler 11, temp. drop due to descaling the rolled stock is uniform over the entire length and the scratch of finishing roll due to scale is not generated. Then, the final pass in this reversible finishing mill 12 is simultaneously performed by interlocking it with two 6-stage rolling mills of a finishing tandem mill 13.</p> |
