| 摘要 |
PURPOSE:To control accurately and rationally cooling of a continuous casting billet in the stage of changing the width of the billet in a continuous casting device by performing tracking in the part for changing the width of the billet with a signal for changing the width of the billet and controlling the changeover of the spraying width of billet cooling nozzles by said tracking. CONSTITUTION:The moving position of the short side 3 of a casting mold for a continuous casting installation is detected with a detector 11 for the position of the short side in the stage of moving the side 3 in the longitudinal direction of the long side and changing the width of a continuous casting billet 6, and the detection signal (a) thereof is inputted together with a signal (b) for commanding operation to an arithmetic device 10 for the width of the billet. A signal C for executing the change in the width of the billet from the device 10 is inputted together with the detected value of the billet 6 by a detector 13 to a tracking device 12, the output signal (e) whereof is inputted to a control device for changing-over the spraying width for cooling the billet. The opening and closing of the nozzles in plural cooling nozzle groups 90a, 90b are adjusted by the output thereof in accordance with the width of the billet 6. The wasteful use of the cooling water is avoided and the uneven cooling of the billet is prevented. |
