1983 Volume 69 Issue 6 Pages 618-624
This paper is concerned with a new electrode-type mold level meter to be used in the mold of continuous casting machines, and with a mold level control system. The principle of this meter is as follows : the electric resistance of flux on molten steel in the mold is detected by the electrode of the level meter. The displacement of the electrode is controlled in such a way that the resistance, which is equivalent to the distance between the electrode and the molten steel surface, has a constant value. Hence the electrode smoothly follows the movement of the free surface of the molten steel. Therefore the mold level can be detected by measuring the electrode displacement. This level control system was analyzed through the use of a simulation model.
The performance of the electrode-type level meter is as follows: (1) maximum range of use: 500 mm, (2) maximum follow-up control speed : 70 mm/s and (3) response time: 1 sec.
Even in the case of applying the electro-magnetic stirring in the mold, it has been confirmed that the electrode-type level meter can perform so well as to keep the change of molten steel level within ±5 mm under the automatic operation.
