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Journal of the Korean Ceramic Society 1998;35(2): 201. |
| 필터댐에 의한 강중 개재물 저감효과 |
| 조문규, 이석근, 정두화, 남수희1, 이재우2 |
포항산업과학연구원 소재연구부문 내화재료연구팀
1포항제철(주) 제강부 연주기술팀
2기술관리팀 |
| Removal of Inclusions in molten Steel by Filter Dam |
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| ABSTRACT |
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A tube-type filter dam(or baffle with holes) for ferrous melt refining is applied to the tundish operation for molten steel having low carbon and ultra-low carbon. The changes in the total oxygen content insoluble aluminum content and the distribution of inclusion size in molten steel during tundish operation were in-vestigated at the pouring part strand and mold of tundish. Removal mechanism of inclusions is considered to be caused by buoyancy action of the filter dam better than filtration action and the size range of in-clusions filtrated by the filter dam was for 30-50$mutextrm{m}$. Decrease in deviation of inclusion content in molten steel was confirmed for appling the filter dam in comparison with using conventional dam and weir. Also the filter dam had the advantage of baffle with holes at lower part in the efficiency of inclusions removal. |
| Key words:
Steelmaking, Continuous casting, Tundish, Filter Dam, Inclusion |
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