RH精煉過程中IF鋼潔凈度控制

崔衡; 陳斌; 王敏; 劉風剛; 青靚; 景明偉

doi:10.13374/j.issn1001-053x.2011.s1.032

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RH精煉過程中IF鋼潔凈度控制

doi: 10.13374/j.issn1001-053x.2011.s1.032

崔衡^1, ,,
陳斌²,
王敏¹,
劉風剛³,
青靚³,
景明偉³

1. 北京科技大學冶金工程研究院, 北京 100083;
2. 首鋼技術研究院, 北京 100043;
3. 河北省首鋼遷安鋼鐵有限責任公司, 遷安 064404

詳細信息

通訊作者:
崔衡,E-mail:cuiheng@ustb.edu.cn

中圖分類號: TF769.4
計量
- 文章訪問數: 285
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- 被引次數: 0
出版歷程
- 收稿日期: 2011-08-18
- 網絡出版日期: 2021-07-30

Cleanliness control of IF steel during the RH refining process

1. Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China;
2. Shougang Technology Research Center, Shougang Corporation, Beijing 100043, China;
3. Shougang Qian'an Iron & Steel Co. Ltd., Qian'an 064404, China

摘要

摘要: 為了優化RH處理工藝、提高RH精煉后的IF鋼水潔凈度,通過分析T[O]含量的變化研究了RH純循環時間、鎮靜時間、鋼包頂渣氧化性對IF鋼潔凈度的影響.實驗結果表明:適當延長純循環時間有利于鋼液潔凈度的提高,加TiFe后保證純循環時間6~8min以上可使RH真空處理結束后鋼液T[O]降至30×10^-6以下;隨著RH真空處理結束后鎮靜時間的延長,中間包鋼水T[O]含量總體呈下降趨勢,鎮靜時間大于30 min的爐次,T[O]可控制在35×10^-6以下;RH結束后渣中T.Fe每提高1%,平均Al、Ti總損失會增加1.05×10^-6 min^-1,其中Al損失率0.40×10^-6 min^-1,Ti損失率0.65×10^-6 min^-1.
- IF鋼 /
- 潔凈度 /
- 精煉
Abstract: The influences of RH circulation time after Ti alloying,holding time,and the T. Fe content in ladle slag on the T[O] content of IF steel were studied to optimize the RH process parameters and improve the cleanliness of IF steel after RH treatment. The results show that appropriately prolonging the circulation time is favorable for improving the cleanliness of IF steel. The T[O]content of molten steel after RH degassing can be decreased below 30×10^-6 if the circulation time is more than 6~8 min after Ti alloying. The T[O]content of molten steel in tundish generally decreases with increasing the holding time after RH treatment,and the T[O]content can be decreased below 35×10^-6 when the holding time is more than 30 min. When the T. Fe content in ladle slag is increased by 1%,the average loss rate of Al and Ti is increased by 1.05×10^-6 min^-1,wherein the loss rate of Al is 0.40×10^-6 min^-1 and that of Ti is 0.65×10^-6 min^-1.
- IF steel /
- cleanliness /
- refining