| 摘要 |
PURPOSE:To improve the yield in rolling without spending time in the removal treatment of a mis-rolled steel, by automatically executing a cobble cutting with a trouble detection. CONSTITUTION:In the case of a bar steel being not guided well to a trough and becoming a mis-rolled one with its being bent at the inlet port of the trough, No.1 flying shear 16 provided between a rough rolling mill and an intermediate rolling mill, and No.2 flying shear 17 provided between the intermedium rolling mill and finishing rolling mill are operated based on the signal, when the bar steel is not detected by a cooling floor inlet port material detector 9 within a specific time after its being cut by the dividing shear 15 of the rear part of the finish rolling mill 5. The rolling steel is then subjected to a cobble cutting to suspend its being bitten into the rolling mill and the mass generation of the mis-rolled steel is prevented. |
