改善多流中間包均勻性研究

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基金項目:

博士后科學基金特別資助項目（2013T60062）；高等學校博士學科點專項科研基金資助項目（20130006110023）；鋼鐵冶金新技術國家重點實驗室基金資助項目（41602014，KF13--09）

Study on improvement in uniformity of a multi-strand tundish

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. National Engineering Research Center of Flat Rolling Equipment, University of Science and Technology Beijing, Beijing 100083, China

摘要: 采用水模型的方法，以一個七機七流中間包為原型，建立1：2.5的水模型系統，對多流中間包各流的均勻性進行了分析.結果表明：多流中間包在無控流裝置下，不能保證各流的均勻性，各流差異性極大；原型中間包各流均勻性較差，且死區比例高，達到45.5%；控流裝置的重要性依次為U型擋墻>穩流器>梯形擋墻；優化后各流均勻性良好，死區比例由原來45.5%降低到平均23.1%，在現場應用取得很好效果.
- 連鑄 /
- 中間包 /
- 水模擬 /
- 流場 /
- 均勻性
Abstract: The uniformity of a 7-stream tundish in a steel plant was studied by establishing a water model with the scale of 1:2.5.Experimental results show that the multi-stream tundish has poor uniformity with no flow control devices and the uniformity difference of each stream is obvious. The liquid steel flow of each stream in the tundish before optimization has a high dead zone proportion of 45.5%. It is found that the importance of flow control devices is U-type dams > turbulence suppressors > trapezium dams. After optimization,flow control devices have good applications in the steel plant,the uniformity of each stream improves greatly,and the proportion of the dead zone decreases to 23.1% from 45.5%.
- continuous casting /
- tundishes /
- water modelling /
- flow fields /
- uniformity