PURPOSE: To control the supply rate of molten steel and to perform stable casting by providing limiting plates which control the contact area between rolls and molten steel in the well part of the molten steel between the rolls and providing a detecting element which senses the approach of the molten steel in the end parts of the limiting plates.
CONSTITUTION: Contact limiting plates 2, 2' are provided to a pair of casting rolls 1, 1' to control the contact area between the molten steel from a nozzle 4 and the rolls 1, 1'. A detecting element 9 is provided in the end parts of the plates 2, 2'. When a fluctuation arises in the down flow rate of the molten steel, the flow rate of the molten steel is detected with the detecting element and is outputted to a detection circuit S. A control calculator PC changes the peripheral speed Vc of the rolls 1, 1' by means of a motor M3 in accordance with the output of the circuit S. At the same time, a motor M2 is driven to change the opening θ of the plates 2, 2' whereby the contact arc length lc with the molten steel is adjusted. The supply of the molten steel to rolls 1, 1' is thus controlled always to an adequate rate with respect to a plate thickness.
ISHIZAKI TOSHIO
YAMAMIYA MASAO
KIKUCHI TOSHIJI
CHIBA YUKIYA
