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首页> 外文期刊>Steel Research International >Non-Metallic Inclusion Behaviors in a New Tundish and SEN Design Using a Swirling Flow during Continuous Casting of Steel
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Non-Metallic Inclusion Behaviors in a New Tundish and SEN Design Using a Swirling Flow during Continuous Casting of Steel

机译：在连续铸造过程中使用旋转流动的新包和森设计中的非金属包容行为

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摘要

The behaviors of non-metallic inclusions in a new tundish and SEN design enabling a swirling flow are investigated by using a Lagrangian particle tracking scheme. The results show that 99% of both Al2O3 and Ce2O3 inclusions are removed from both the top surface and the other tundish walls with a "trap" boundary condition, while only around 60% are removed from the top surface of tundish for a "reflect" boundary condition at the other tundish walls. Large size non-metallic inclusions of different densities show a large difference under a "reflect" boundary condition at tundish walls, due to a high buoyancy of light inclusions. In the swirling flow SEN, a much smaller number of large Al2O3 inclusions touches the wall compared to Ce2O3 inclusions. This is due to that they have larger deviations from the steel flow path compared to heavy Ce2O3 inclusions, due to the centripetal force. For small size inclusions, the centripetal separation is not effective neither for the light Al2O3 inclusions nor for the heavy Ce2O3 inclusions in the current swirling flow SEN with a swirl number of 0.4. Light Al2O3 inclusions larger than 40 mm can be influenced by the current centripetal force.
机译：通过使用拉格朗日粒子跟踪方案来研究新的中间包和森设计中的非金属夹杂物的行为。结果表明，Al2O3和Ce2O3夹杂物中的99％从顶表面和另一个中间包壁上除去“陷阱”边界条件，而只有约60％的时间从中间包的顶面除去“反射”其他中间包墙的边界条件。由于光夹杂物的高浮力，不同密度的大尺寸非金属夹杂物在周边壁上的“反射”边界条件下显示出很大的差异。在旋转流动森中，与CE2O3夹杂物相比，较少数量的大型Al2O3夹杂物触及墙壁。这是由于它们与重型Ce2O3夹杂物相比，它们与钢流动路径的偏差较大，因此由于向心的夹杂物。对于小尺寸的夹杂物，向心分离既不用于光Al2O3夹杂物也不是有效的，也不是目前旋流流动中的重型CE2O3夹杂物，其涡流型为0.4。 Light Al2O3夹杂物大于40毫米，可以受到当前的离心力的影响。

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