| 摘要 |
PURPOSE:To pour the exact amt. at an adequate pouring speed by comparing the pouring speed obtainable from a weighing signal for a ladle with a set value, controlling the pouring speed, changing the pouring speed with the set value of the pouring time and stopping the pouring upon completion of the supply of the prescribed pouring amt. CONSTITUTION:The weighing signal of a weighing device 7 for the weight of he molten metal including the weight of the ladle 1, etc. is first stored by a control part 10 prior to pouring. The ladle 1 is then rotated at a specified speed by a driving decelerator 3 and when the molten metal begins to flow out of a tapping port 2, the outflow is detected by a detector 8 and the detection signal is fed to the part 10. Then the part 10 outputs the rotating speed signal to a control part 11 of the device 3 at the pouring speed set and stored by an operating part 9. The control part 10 calculates at the same time the pouring amt. per unit time (pouring speed) by the signal from the meter 7, compares the same with the set pouring speed and corrects the rotating speed signal. The control of the pouring speed is repeated until the signal from the meter 7 attains the set value of the pouring rate. The device 3 is stopped and is run backward to stop the pouring when the set value of the pouring amt. is attained.
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