| 摘要 |
PURPOSE:To cool a metal plate in good efficiency, by a method wherein a nozzle for injecting a cooling medium over the total width of the metal plate is arranged to the under surface side of the high temp. metal plate moved to a horizontal direction and the cooling medium is jetted to the metal plate to control the cooling so as to adjust the cooling final temp. thereof to a specific temp. CONSTITUTION:A strip 2 is moved horizontally through a cooling tank 1 and cooled by the jetted water 3 from nozzles 4 provided to the under surface side thereof. The nozzles 4 are arranged to the central part of the strip at predetermined intervals in a line toward the advance direction of the strip 2 so as to suppress the splashing in the width direction of the jetted water 3 over the total width of the strip 2 or wider and a repulsion buffer body 8 is provided to the wall of the cooling tank in order to prevent the scattering of water. In addition, informations from a speed meter 10, a plate thickness meter 11 and a thermometer 12 of the strip 2 are put in an information inputting device 13 to be subjected to comparision operation with a set reference level value by an operator 15 and the obtained control signal is sent to a pump 9, a main pipe valve 6 and a branch pipe valve 7 through an output controller 16 to control the cooling final temp. of the strip 2 so as to adjust the same to 100 deg.C or more. |
