| 摘要 |
PURPOSE:To make easy the starting of casting and the restarting of casting after breakout by bringing drums into tight contact with each other prior to the start of casting then opening the space between the drums at a specified speed and adjusting the rotating speed of the drums upon starting of pouring. CONSTITUTION:The space between one water-cooled casting drum 1'' and the other water-cooled casting drum 1 is adjusted by an oil pressure, etc. The space quantity is measured by a sensor 15 and the measured displacement quantity is converted to an electric signal by a displacement converter 12. The relation between the space quantity and the displacement is controlled by a controller 13. The output is outputted by an output amplifier 14 and a driving source 10 is operated to control the rotation of the drums 1, 1''. The molten metal is therefore poured at a specified flow rate from a tundish and at the same time the drums open from the initial tight contact state and rotate to provide the prescribed space and rotating speed. The mass-balance with the molten metal supplied thereto is thus attained. The need for mounting a dummy bar to be used in the initial period is thereby eliminated and the recasting after the breakout is made possible.
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