Influence of Tundish Reform on Casting Slab Quality
In order to reduce the directly erosion of molten steel to tundish refractory, increase the life of the tundish used for the converter → continuous casting factory. The tundish used in some factory was reformed, a steady flow control devices was set up in the impact position of the long nozzle. And the inclusions in steel were systematically analyzed before and after reforming tundish. The results show that, after reforming tundish, the content of [O] in the casting billet is 138×10-4%, which decrases 44.14×10-4% compared with the former. The content of large inclusions in the casting billet is 28.77 mg/10 kg, which decrases 21.9% compared with the former. The content of micro-inclusion is 27.10 个 /mm2, which decrases 52.66% compared with the former. The obvious reduce of inclusion content in steel indicates that the effect after reforming tundish is good.