| 摘要 |
<p>PURPOSE:To perform a correct control of a plate width contraction by estimating the plate width contraction amount of a rolled stock with the observation of the interstand unit tension, plate width in a finish rolling, the temperature and plate width of the rolled stock of after its rough rolling and adjusting the edging amount by an edger prior to the finish rolling. CONSTITUTION:The temperature and plater width of the rolled stock 2 of after rough rolling by a rough rolling mill row 1 are measured by a thermometer 3 and plate width gage 4. In the finish rolling by a hot continuous finish rolling mill 5 the plate width of the rolled stock 2 of a 1st stand F1 outlet side and that of the rolling stock 2 of the final stand F7 outlet side are respectively measured by plate width gages 6 and 7. Moreover, an interstand unit tension is observed on each specific sampling section by each looper 8. This sampling section is measured by a measuring roll 9. Based on the above mentioned each actually measured value the plate width contraction amount of the rolled stock 2 is estimated by a computing element 10 and based on the above mentioned estimation value the edging amount of the edger 11 installed at the inlet side of the rolling mill 5 is adjusted. A correct plate width contraction control can thus be enabled.</p> |
