PURPOSE: To simply execute pouring control of molten steel at low cost by inserting a stirring shaft into a pouring passage and controlling the molten metal flow rate discharged from a nozzle provided at the bottom part according to intensity of the stirring force.
CONSTITUTION: At the time of giving the molten steel the stirring power by rotating the stirring shaft 52 the molten steel forms circular flow in a ladle, even if the discharge of the molten steel is started by opening a nozzle plug 50, the discharged flow rate is reduced in comparison with in the case of no stirring and further, this discharged flow rate is adjustable by changing the speed of revolutions. Therefore, by controlling the speed of revolutions of the stirring shaft 52 according to head pressure in the ladle during casting, the pouring flow rate corresponding to the casting rate can easily be secured.
WAKUI TAKEO
YOSHIDA NAOTADA
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