| 摘要 |
PURPOSE:To improve the productivity by assuming a roll alignment by finding drawing resistance of a cast slab from load of pinch roll driving motor and finding the limited casting velocity based on relation between the steel component and the casting velocity. CONSTITUTION:Load meters 7 of each ammeter, etc., are arranged to each driving motor 6 of the pinch rolls 5 and connected to a casting velocity control device 8. Further, the casting velocity detector 10 is arranged to the pinch roll 5 and this output signal is inputted in the control device 8. The control device 8 operates the cast slab drawing resistance F based on the signals from the load meter 7 and the detector 10. The roll alignment is assumed corresponding to change of drawing resistance F and the velocity of the pinch rolls 5 is controlled so as not to exceed the limited casting velocity obtd. by the relation between the steel component and the casting velocity. Safety operation is secured and as sufficient measure can be executed to a sudden accident, the productivity of casting is improved.
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