高品質IF鋼連鑄中間包降低殘鋼量的水模型研究

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Water model research on decreasing the casting remnant of high quality IF steel

1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China;
4. Qiangang Corporation of Shougang Group, Qianan 064404, China;
5. Shougang Technical Research Institute, Beijing 100043, China

摘要: 為解決某鋼廠生產高品質IF鋼中間包死區較大,夾雜物不能充分上浮,澆注結束時殘鋼量過多等問題,通過中間包水模擬實驗對擋壩結構進行了優化.結果表明:增加擋壩高度,并開向上角度通鋼孔,可有效提高鋼液向鋼液面的運動趨勢,延長鋼液運動路徑,鋼液滯止時間提高12.5%,死區減少36%;澆注結束時部分鋼水從通鋼孔流出,避免了擋壩間殘留大量鋼液而渣全部進入澆注區現象的發生,理論殘鋼量從9 t降到4.5 t,金屬收得率提高.
- IF鋼 /
- 連鑄 /
- 中間包 /
- 水模擬
Abstract: To solve the problems such as relatively big dead zones,insufficient flotation of inclusions and high casting remnant in tundishes when producing high quality interstitial-free (IF) steel,a series of optimizing measures were practiced in water modeling experiments. The results show that the fluid flow manifests an obvious up-ward trend using the high dam with two upward holes,the minimum residence time increases by 12.5%,and the dead zone decreases by 36%. In the end of casting,liquid steel can flow out through the holes avoiding a large amount of steel between the dames,the theoretical casting remnant declines from 9 to 4.5 t,and the metal yield increases obviously.
- interstitial-free steel /
- continuous casting /
- tundishes /
- water modeling