Abstract In this paper, the flow field of the submerged entry nozzle (SEN) in the continuous casting process is analyzed in detail by numerical simulation. It is found that the front and rear positions of the SEN outlets and the bottom of the nozzle are prone to the accumulation of inclusions. Compared with the actual SEN, the clogging positions with the simulated results are consistent. The composition of nozzle nodules at two different positions is analyzed by scanning electron microscope (SEM), and the inclusions are alumina. The changes in molten steel level characteristics in the mold without and after clogging are compared and analyzed. It is found that the velocity of molten steel near the surface with nozzle clogging reaches 0.483 m/s, the free level fluctuation value of molten steel is 8.9 mm, which is easy to cause steel defects.

中文翻译：

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连铸结晶器水口堵塞位置分析

摘要 本文通过数值模拟对连铸过程中浸入式水口（SEN）的流场进行了详细分析。发现SEN出口前后位置和喷嘴底部容易出现夹杂物堆积。与实际 SEN 相比，堵塞位置与模拟结果一致。通过扫描电子显微镜（SEM）分析了两个不同位置的喷嘴结节的成分，夹杂物为氧化铝。对比分析了无堵塞和堵塞后结晶器内钢水液位特性的变化。发现水口堵塞表面附近钢水流速达到0.483 m/s，钢水自由液位波动值为8.9 mm，