REVERSING ROLLING MILL WITH COOLING FACILITY AND CORRESPONDING METHOD OF COOLING A STEEL PLATE OR SHEET

摘要

There are provided cooling equipment and a cooling method for a steel plate or sheet which can properly cool a steel plate or sheet with a compact size on a hot rolling line, for example, during controlled rolling of the steel plate or sheet. Specifically, steel-plate or sheet cooling equipment supplies cooing water onto upper and lower surfaces of a steel plate or sheet 10 while the steel plate or sheet 10 is passing during hot rolling, and includes nozzles 22a and 22b that obliquely supply the cooling water onto the upper surface of the steel plate or sheet 10 from above. The nozzles 22a and 22b are arranged so that jets of cooling water oppose each other in the transferring direction of the steel plate or sheet 10 on the steel plate or sheet 10. More specifically, pass-type cooling equipment 20 has a high water flow rate of 4 m 3 /m 2 min or more.