Method of predicting naked molten metal and operation method of continuous casting using the same
The present invention provides a continuous casting operation method comprising the following steps of: checking an amount of molten steel discharged from a tundish to a continuous casting mold; calculating an index, at which naked molten metal occurs by exposing the molten steel in a molten metal s...
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| Format: | Patent |
| Sprache: | eng ; kor |
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| Zusammenfassung: | The present invention provides a continuous casting operation method comprising the following steps of: checking an amount of molten steel discharged from a tundish to a continuous casting mold; calculating an index, at which naked molten metal occurs by exposing the molten steel in a molten metal surface part of the tundish to the atmosphere, by using the following relational expression 1 using the discharge amount; and when the index exceeds a set value, performing a naked molten metal reduction action. In the relational expression 1, naked molten metal occurrence index [%] = 78302 × (discharge amount [ton/min])^(-5.039). By using a method for predicting occurrence of naked molten metal, re-oxidation of molten steel is prevented in the continuous casting process.
본 발명은 턴디쉬에서 연속 주조 몰드로 배출되는 용강 토출량을 확인하는 단계; 상기 토출량을 이용한 하기 관계식1에 의해 상기 턴디쉬의 탕면부 용강이 대기로 노출되는 나탕이 발생하는 지수를 산출하는 단계; 및 상기 지수가 설정값을 초과하는 경우 나탕 저감 조치를 수행하는 단계;를 포함하는 연속 주조 조업 방법을 제공한다. 관계식1 나탕 발생 지수[%] = 78302 ×(토출량[ton/min])-5.039 |
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