Study of the Impact of Opening Streams on Turbulence Inhibitors in Tundishes
Study of the Impact of Opening Streams on Turbulence Inhibitors in Tundishes
复制标题
开放流对中间包湍流抑制剂影响的研究
DOI：
10.1007/s11663-022-02595-2
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发表时间：
2022-08
影响因子：
3
通讯作者：
Jingyu Huang
中科院分区：
文献类型：
--
作者：
Peng Lin;Yan Jin;Feifang Gan;Guojun Ma;Changgui Cheng;Yang Li;Ziyu Liu;Jun Li;Jingyu Huang
在本研究中，对用于湍流抑制器的材料进行了鉴定，对其进行了精确的设计，并对中间包操作周期中最苛刻的阶段即开罐阶段的湍流抑制器的应力进行了研究。采用流体体积(VOF)模型对中间包开罐阶段钢包和中间包内的流场进行了数值模拟，并采用流体-瞬变结构耦合模型对中间包开罐阶段的湍流抑制器进行了动力学分析。利用该模型对某钢厂的方形屋檐湍流抑制器进行了研究。通过与水模型的比较，确定了中间包内的流场。根据模型模拟，钢包平均产量随钢包内钢水深度的增加而线性增加。在中间包开启阶段，来自钢包的开启气流将湍流抑制器的壁面向外推，而湍流抑制器的屋檐角部是承受最大应力的应力集中点。随着钢包内钢水深度的增加，最大应力迅速增大。高度为180 mm的湍流抑制器的最大应力在0.38 Mpa时最大。湍流抑制器内的最大应力随着屋檐宽度的增加而减小。Al_2O_3湍流缓蚀剂的最大应力大于MgO湍流缓蚀剂。材料强度和钢水飞溅高度决定了湍流抑制器的最大应力。钢水的飞溅和下落在湍流抑制器中引起振动，这些振动显著降低了湍流抑制器中材料的拉应力。
In this study, the materials used in turbulence inhibitors were identified, inhibitors were precisely designed, and the stress on turbulence inhibitors during the most demanding stage in the tundish operation cycle, i.e., the opening stage, was investigated. The fluid fields of the ladle and tundish during the opening stage of the tundish were simulated with a volume of fluid (VOF) model, and a dynamic analysis of the turbulence inhibitor during this stage was conducted using a fluid-transient structure coupling model. A square turbulence inhibitor with eaves in a Chinese steel mill was studied with the models. The fluid field of the tundish was confirmed by comparison with a water model. According to the model simulation, the average output of the ladle increased linearly with increasing depth of molten steel in the ladle. During the opening stage of the tundish, the opening stream from the ladle pushed the walls of the turbulence inhibitor outward, and the corners of the eave in the turbulence inhibitor were stress concentration points that bore the maximum stress. The maximum stress increased rapidly with increasing depth of molten steel in the ladle. A turbulence inhibitor with a height of 180 mm had the greatest maximum stress at 0.38 mPa. The maximum stress in the turbulence inhibitor decreased with increasing eave width. The maximum stress in the Al2O3 turbulence inhibitor was greater than that in the MgO turbulence inhibitor. The material strength and height of splashing of molten steel determined the maximum stress in the turbulence inhibitor. The splashing and falling of molten steel caused vibrations in the turbulence inhibitor, and these vibrations notably decreased the tensile stress of the materials in the turbulence inhibitor.
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DOI：
10.3390/ma13225129
发表时间：
2020-11-13
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Zhang B;Liu F;Zhu R;Zhu J
通讯作者：
Zhu J
DOI：
10.1007/s11663-016-0747-1
发表时间：
2016-10-01
影响因子：
3
作者：
Chang, Sheng;Cao, Xiangkun;Guthrie, Roderick I. L.
通讯作者：
Guthrie, Roderick I. L.
影响因子：
2.2
作者：
S. Garcia-Hernandez;Rodolfo D. Morales;José de Jesús Barreto;Ismael Calderón-Ramos;Enif Gutiérrez
通讯作者：
S. Garcia-Hernandez;Rodolfo D. Morales;José de Jesús Barreto;Ismael Calderón-Ramos;Enif Gutiérrez
五流方坯中间包换包过程中瞬态多相流的数值模拟
影响因子：
2.9
作者：
Zhang Hua;Luo Ronghua;Fang Qing;Ni Hongwei;Song Xiao
通讯作者：
Song Xiao
影响因子：
1.6
作者：
S. Patil;N. Viswanathan
通讯作者：
S. Patil;N. Viswanathan