Three-dimensional FEM study of fluid flow in mould for beam blank continuous casting: influence of nozzle structure and parameters on fluid flow

被引：12

作者：

Chen, W. ^{[1
]}

Zhang, Y. -Z. ^{[1
]}

Zhu, L. -G. ^{[1
]}

Zhang, C. J. ^{[1
]}

Chen, Y. ^{[1
]}

Wang, B. -X. ^{[2
]}

Wang, C. ^{[1
]}

机构：

[1] Hebei United Univ, Coll Met & Energy Engn, Tangshan 063009, Peoples R China

[2] Tangshan Heavy Plate Co Ltd, Tangshan 063600, Peoples R China

来源：

IRONMAKING & STEELMAKING | 2012年 / 39卷 / 08期

关键词：

Continuous casting; Beam blank; Mould; Fluid flow field; SEN; Steel cleanliness;

D O I：

10.1179/1743281211Y.0000000052

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The aim of this work was to analyse the influence of the nozzle structure and parameters on the molten steel flow in beam blank continuous casting. A three-dimensional steady state finite element model was developed to compute the flow field and the meniscus fluctuation in the mould. The volume of fluid model was used to track the free surface evolution at the meniscus. It can be concluded that compared with a through conduit submerged entry nozzle (SEN), a three lateral hole SEN will reduce the impact depth, change greatly the velocity at the free surface and intensify the fluctuation of the free surface. As a whole, the fluid flow in the mould will be improved, which will help to melt the mould powder and improve the absorption of non-metallic inclusions, thus improving steel cleanness. The most rational rake angle for the three lateral hole SEN is 9 degrees. Meanwhile, the SEN immersion depth should be in the range 200-250 mm if the casting speed is about 0.9-1.1 m min(-1).

引用

页码：560 / 567

页数：8

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