Analysis of nozzle clogging position in a continuous casting mold

被引：4
|
作者：
Li Jinbo [1 ,2 ]
Zhang Tao [1 ]
Gao Fubin [1 ]
Gong Yankun [1 ]
Zhou Dan [1 ]
机构：
[1] HBIS Grp, Hansteel Co Ltd, Handan 056000, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
来源：
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING | 2022年 / 20卷 / 10期
关键词：
clogging; inclusion; level fluctuation; submerged entry nozzle; surface velocity; GRAPHITE IMMERSION NOZZLE; MECHANISM; MODEL;
D O I：
10.1515/ijcre-2021-0291
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
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.
引用
收藏
页码：1027 / 1033
页数：7
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