模底砖孔径影响大钢锭浇注及凝固过程的数值模拟

张文; 钟云波; 王赟; 王江; 雷作胜; 任忠鸣

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模底砖孔径影响大钢锭浇注及凝固过程的数值模拟
Numerical Simulation on Effects of Nozzle Brick Diameters on the Teeming and Solidification of Large Steel Ingot
2010年30卷第9期页码：803-806
纸质出版日期： 2010 ，
DOI：

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[1]张文,钟云波,王赟,王江,雷作胜,任忠鸣.模底砖孔径影响大钢锭浇注及凝固过程的数值模拟[J].特种铸造及有色合金,2010,30(09):803-806+778-779.

Zhang Wen, Zhong Yunbo, Wang Yun, et al. Numerical Simulation on Effects of Nozzle Brick Diameters on the Teeming and Solidification of Large Steel Ingot[J]. Special Casting & Nonferrous Alloys, 2010,30(9):803-806.
[1]张文,钟云波,王赟,王江,雷作胜,任忠鸣.模底砖孔径影响大钢锭浇注及凝固过程的数值模拟[J].特种铸造及有色合金,2010,30(09):803-806+778-779. DOI：

Zhang Wen, Zhong Yunbo, Wang Yun, et al. Numerical Simulation on Effects of Nozzle Brick Diameters on the Teeming and Solidification of Large Steel Ingot[J]. Special Casting & Nonferrous Alloys, 2010,30(9):803-806. DOI：

摘要

运用模拟软件ProCAST模拟了25t大钢锭的浇注及凝固过程

考察了模底砖孔径对钢水流场的影响。结果表明

随着模底砖孔径的增大

钢水的出口速度将减小

导致液面凸起的高度减小

液面趋于平稳。孔径为0.12m时

液面钢水的水平流速较小

较原工艺能更好地防止卷渣。改变模底砖孔径不会使温度场发生明显变化。

Abstract

The teeming and solidification process of ingot with 25 tons in weight was simulated by ProCAST software to understand effects of nozzle brick diameters on the flow filed of liquid steel. The results reveal that with increasing in nozzle brick diameters

outlet velocity of liquid steel is decreased

leading to the decrease of meniscus and the improvement of stability of liquid surface. With diameter of 0.12 m

liquid steel surface exhibits small horizontal flow velocity

which can more desirably prevent the slag entrapment compared with the initial sketch. In addition

adjustment of nozzle brick diameter only slightly changes temperature field.