| 摘要 |
PURPOSE:To surely prevent flow out of slag and to obtain a casting billet having high quality by detecting a molten steel level and also an erosion volume of refractory in a ladle and estimating remaining molten steel in the ladle at high accuracy. CONSTITUTION:At least two changed points in inducing magnetic field intensity of an exciting coil 11 by AC exciting current of a molten metal level measuring apparatus 13 is detected by a detecting coil 12 during flowing process of molten steel in the ladle 1, and molten steel flowing weight between the above- mentioned changed points is obtd. by a controlling device 14. That is, the device 14 is calculated by a tundish 6 weighing machine 15 and tundish 6 weight, pouring weight, etc., according to a length measuring instrument 16 for the above-mentioned flowing wt., and is detected for a change of the ladle sectional area in comparison with flowing weight at new-lining ladle 1 to detect erosion vol. of the ladle at arranged position of coil 11, 12. Then the remaining molten steel weight in the ladle is obtd. by changing of the above-mentioned magnetic field intensity as standard for the ladle 1 vol. compensated by the above- mentioned erosion vol.
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