北京科技大学学报2016，Vol.38Issue(12)：1702-1710,9.DOI:10.13374/j.issn2095-9389.2016.12.007
超低碳钢顶渣氧化性对钢液洁净度的影响
Influence of ladle slag oxidability on the cleanliness of ultra low carbon steel
苑鹏 1李海波 1罗衍昭 1刘道正 2陈建光 2王强强 3宋丽娜4
作者信息
- 1. 首钢集团总公司技术研究院薄板研究所,北京100043
- 2. 首钢股份公司迁安钢铁公司,迁安064404
- 3. 河南济源钢铁(集团)有限公司,济源454650
- 4. 钢铁研究总院科技信息与战略研究所,北京100081
- 折叠
摘要
Abstract
Slag oxidability,steel composition and inclusions were analyzed by slag sampling and steel sampling from the BOF endpoint to the tundish for studying the influence of ladle slag oxidability on the cleanliness of ultra low carbon steel.The results show that by ladle slag treatment after BOF tapping,T.Fe content in top slag decreases from 19.18％ to 4.68％ when getting in RH,indicating that the reduction of slag oxidability is obvious.The reduction of T.Fe content in slag leads to the reduction of [O] content in steel.For some heats with low T.Fe content,the average oxygen-blowing amount is large,and then the [O] content before Al deoxidization is relatively high.The relationship between the T.Fe content of RH end slag and the number of inclusions is linear,but meanwhile there is no obvious relationship between the number of inclusions after RH and the [O] content before Al deoxidization.The (CaO)/(Al2O3) ratio of ladle slag influences the Al2O3 absorption ability.The number of inclusions will be large if the (CaO)/ (Al2O3) ratio of the slag is not reasonable.The defects of hot rolled sheets significantly decline with the reduction of slag oxidability.关键词
炼钢/低碳钢/渣/氧化性/夹杂物/洁净度/表面缺陷Key words
steelmaking/low carbon steel/slag/oxidability/inclusions/cleanliness/surface defects分类
矿业与冶金引用本文复制引用
苑鹏,李海波,罗衍昭,刘道正,陈建光,王强强,宋丽娜..超低碳钢顶渣氧化性对钢液洁净度的影响[J].北京科技大学学报,2016,38(12):1702-1710,9.
