Conticasting technology for feeding rare-earth wires into tundish
A technology for continuous casting tundish and rare earth wire, which is applied in the field of continuous casting tundish feeding rare earth wire technology, can solve the problems of late rare earth addition time, high rare earth recovery rate, slag entrainment defect, etc., and achieves small columnar crystal area and segregation area. , The rare earth distribution is uniform, and the effect of eliminating moire defects
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[0013] combine figure 1 , figure 2 , image 3 , the tundish feeding rare earth wire process of the present invention is used for the production of the 16MnREL continuous casting slab of Nanjing Iron and Steel Group Co., Ltd., the steps are: in the billet continuous casting process, molten steel flows into the tundish 2 from the ladle 1, and then passes through the middle The submerged nozzle 8 connected by the stopper rod 4 to control the flow of molten steel flows into the crystallizer 3, and the rare earth metal wire 7 with a diameter of 3.2mm is pressed according to the speed (the embodiment 1 is: 14m / s; the embodiment 2 is: 28m / s) ) is introduced into the tundish 2 from the wire feeder 5 through the steel conduit 6, and the rare earth wire passes through the covering slag on the molten steel surface of the tundish 2 and enters the molten steel near the stopper rod (within the range of Φ500). After the rare earth wire melts, it enters the crystallizer with the molten ste...
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