| 摘要 |
PURPOSE:To improve the working rate of the installation, and to improve the yield of product, by shutting down the installation after threading an inexpensive warmer coil, and by connecting the warmer coil with a product strip before restarting the rolling process. CONSTITUTION:At continuously rolling a strip 2 with a tandem cold rolling apparatus A and a continuous annealing apparatus B, if either one of A or B is to be shut down, in such a case of interrupting the operation of the continuous rolling process because of a trouble in the apparatus B, for example, the strip 2 is cut by a shear 15 on the run-out side of the mill. Hereupon, the operation of the apparatus A is continued as usual. At the apparatus B, a warmer coil 17 is welded to the tail end of the strip 2 once cut in the said shutting down operation, and the warmer coil 17 is uncoiled from the warmer coil pay-off reel 16, and hereby, the strip 2 is subjected to a normal treatment in an annealing furnace 10. When the coil 17 runs out of the furnace 10, the apparatus B is stopped and is subjected to an inspection and maintenance works; thereby, when the operation of the apparatus B becomes restartable, the strip 2 is welded to the coil 17, and the continuous rolling process is restarted. |
