基于低碱度精炼渣的Q390C钢水洁净度控制实践
Practice of Controlling the Cleanliness of Q390C Steel Under low Alkalinity Refining Slag
姜新岩 1王兴 1李杰 1陈方1
作者信息
- 1. 陕钢集团产业创新研究院有限公司,陕西 汉中 723000
- 折叠
摘要
针对低合金高强度中厚钢板Q390C钢在低碱度精炼渣下钢水洁净度进行了研究,结果表明,渣系组分w(CaO)=43％～48％、w(SiO2)为 12％～15％、w(Al2O3)为 23％～27％、w(MgO)为 3％～7％、碱度(CaO 与 SiO2质量比)为3～4时,渣系完全处于液相区,钢中w[S]≤0.008％,w(T.[O])≤0.002 5％,BT类、Ds类夹杂物级别降低,钢水洁净度满足指标要求.
Abstract
A study was conducted on the cleanliness of molten steel under low alkalinity refining slag for Q390C steel plate.The results showed that the slag system component w(CaO)=43％～48％;w(SiO2)=12％～l5％;w(Al2O3)=23％～27％;w(MgO)is 3％～7％.When alkalinity(CaO/SiO2)is 3～4,the slag is completely in the liquid phase,and w[S]≤ 0.008％,w(T.[0])≤0.002 5％,the level of BT and Ds inclusions is reduced,and the cleanliness of the molten steel meets the requirements.
关键词
Q390C钢/精炼渣/钢水洁净度Key words
Q390C/refining slag/steel cleanliness引用本文复制引用
出版年
2024
NETL
NSTL
万方数据