| 摘要 |
<p>PURPOSE:To roll plural hot strips having different width size from piece of a slab by performing the plate width change inside the coil at the finishing rolling stage by changing the tension. CONSTITUTION:A stripe 20 is fed from a rough rolling mill and an on-line processing calculator 61 takes in the data from the rolling reduction devices 21-27 of each stand, load cells 31-37, speed detectors 41-47 and host computer. And it controls the speed control device 62 of each stand, looper control device 63 and rolling reduction control device 64. The host computer is for productivity control and transmits the respective size to a calculator 61 in case of producing the first order item and second order item by a piece of slab. A calculator 61 calculates the plate width changing point at the inlet side of finishing rolling mill and during the change point passing through the space among stands it controls the looper and changes the tension.</p> |
