| 摘要 |
PURPOSE:To make the structure of a band steel uniform, by controlling the cooling capacity of a water spraying device to a lower value as compared with that for a part of the band steel except its front and end parts, when the front end part and the rear end part of the band steel passes through the water spraying device. CONSTITUTION:When a band steel 4 is bitten by a No.1 stand, a host computer 5 actuates a device 7 used for compensating the temperatures of the front and rear ends by a load cell 15 signal basing on the information inputted to a cooling-information receiving-device 6 to decide a target coiling temperature of the front end part, and controls the temperature of the front part of the band steel 4 by outputting an opening and closing command to water spraying parts 9 and 10 of a water spraying device 2 through the next coiling-temperature controlling device 8. When the rear end part of the band steel 4 reaches a No.6 stand, a pulse oscillator 13 detects its length and decides the coiling temperature by actuating the device 7, and the device 8 decides an optimum water spraying pattern and outputs an opening and closing command to the parts 9 and 10 to control the temperature. Further, the temperatures of the front and rear end parts are controlled at the lower value of cooling capacity of the device 2 as compared with that for the other part of the band steel. |
