連鑄中間包內夾雜物去除行為的水模型研究

張勝軍; 鄭淑國; 朱苗勇

doi:10.13374/j.issn1001-053x.2007.08.006

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驗證碼

連鑄中間包內夾雜物去除行為的水模型研究

doi: 10.13374/j.issn1001-053x.2007.08.006

東北大學材料與冶金學院, 沈陽 110004

基金項目:

國家自然科學基金與上海寶鋼集團公司聯合資助項目(No.50274022)

詳細信息

作者簡介:
張勝軍(1980-),男,碩士;朱苗勇(1965-),男,教授,博士生導師

中圖分類號: TF777
計量
- 文章訪問數: 182
- HTML全文瀏覽量: 54
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 2007-03-04
- 修回日期: 2007-05-12
- 網絡出版日期: 2021-08-16

Water model study on the mechanism of inclusion removal in a continuous casting tundish

Materials and Metallurgy School, Northeastern University, Shenyang 110004, China

摘要

摘要: 通過選擇乳狀液滴模擬夾雜物和連鑄中間包水模型實驗,考察了控流裝置、澆鑄速度、夾雜物粒徑對中間包內夾雜物去除行為的影響規律.結果表明:擋墻-擋壩組合控流夾雜物去除效果最佳,中間包內強湍流區夾雜物的碰撞聚合以及向上和表面流速的增加是主因;中間包注流區加入抑湍器,雖然其流體流動特征發生改變,但對夾雜物去除率的影響并不顯著;較高的澆鑄速度下,單純靠控流裝置的優化已不能很好地改善夾雜物的去除效果.
- 連鑄中間包 /
- 流場 /
- 夾雜物 /
- 水模型
Abstract: The effects of flow control devices, casting speed of liquid steel and inclusion size on inclusion removal in a continuous casting tundish were investigated by choosing emulsion drops to simulate inclusions in a water model. The results show that the efficiency of inclusion removal in the tundish with weir and dams is relatively high due to the collision and aggregation of inclusions in high turbulence region and the improvement of flow field in the tundish. Although adding turbulence inhibitor into the tundish changes fluid flow little in pouring region, it has not much effect on the efficiency of inclusion removal. It seems to be difficult to improve the efficiency of inclusion removal only by optimizing the flow control devices in the tundish with high casting speed of liquid steel.
- continuous casting tundish /
- flow filed /
- inclusion /
- water modeling