%0 Journal Article %A DENG Wei1 %A NIU Shuai1 %A YANG Enjiao1 %A WANG Dejiong1 %A WANG Kaimin2 %A TANG Haiyan2 %T Study on an identical metallurgical effect for multistrand tundish during special steel bloom casting %D 2021 %R 10.13228/j.boyuan.issn1001-0963.20210241 %J Journal of Iron and Steel Research %P 1144-1153 %V 33 %N 11 %X Abstract: The divergence of the molten steel flow and temperature state in a multistrand tundish is a frequent reason leading to a poor continuous casting quality consistence and their final steel products. For a practical special steel bloom casting process, the measured temperature difference between the edge strand and the middle strand in its original 4strand Tshaped symmetrical tundish is as large as 4-7℃. To improve the quality of special steel long products from its casting period, the thermal fluid dynamics simulation on the overall metallurgical behavior of the tundish was carried out based on the actual casting conditions. The reasons for the obviously slow flow response of the edge strand nozzle in the prototype tundish and the poor consistency among strands were revealed. An effective countermeasure to control the molten steel flow and temperature difference in the multistrand tundish is proposed, which can improve the temperature distribution uniformity of molten steel in the tundish obviously, and the temperature difference between the edge strand and the middle strand can be reduced to less than 1℃ by the numerical analysis. With one of improved flow control designs for the tundish adopted in production, the measured temperature difference between nozzles is dropped to 0-3℃ which is remarkable as compared to the original one. It is pointed out that to optimize the multistrand tundish for an improved overall metallurgical effect is an important issue especially for long products production, which can be achieved by numerical simulation through a reasonable thermal fluid dynamics analysis. %U http://www.chinamet.cn/Jweb_gtyjxb_cn/EN/10.13228/j.boyuan.issn1001-0963.20210241