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首页> 外文期刊>Scandinavian Journal of Metallurgy >An investigation of slag floatation and entrapment in a continuous-casting tundish using fluid-flow simulations, sampling and physical metallurgy
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An investigation of slag floatation and entrapment in a continuous-casting tundish using fluid-flow simulations, sampling and physical metallurgy

机译：利用流体流动模拟，采样和物理冶金技术研究连续浇铸中间包中的渣浮和夹带

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摘要

Some aspects of inclusion behaviour in the tundish have been investigated both theoretically and experimentally. Good agreement was obtained between measured and predicted temperature and flow fields for 1 - to 6-strand continuous-casting tundishes. In this study the flow field was redesigned with weirs, resulting in the addition of a vertical component to Stoke's equation. The results indicate an increase in the velocity that cause a rise of inclusions (smaller inclusions (<20 mu m)). Consideration of slag, flux and refractory in the model has also made it possible to simulate the mixing of steel and slag. Special sampling techniques were used to gather information. Samples were analysed using ultrasonic testing, LOM, SEM and Atomic Force Microscopy (AFM). The analysis results were used to verify the predictions regarding steel/slag mixing and understanding of physical conditions at the interfaces. As a result, the casting praxis was improved (cleaner steel) and the products were of higher quality.
机译：从理论上和实验上都对中间包中夹杂物行为的某些方面进行了研究。在1-6股连续浇铸隧道的实测和预测温度和流场之间获得了良好的一致性。在这项研究中，对流场进行了堰式设计，从而在斯托克方程中增加了垂直分量。结果表明，引起夹杂物增加的速度增加（较小的夹杂物（<20微米））。在模型中考虑炉渣，助熔剂和耐火材料也使得模拟钢和炉渣的混合成为可能。特殊的采样技术被用来收集信息。使用超声测试，LOM，SEM和原子力显微镜（AFM）对样品进行分析。分析结果用于验证有关钢/渣混合以及对界面物理条件的理解的预测。结果，改善了铸造实践（更清洁的钢），产品质量更高。

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