Effcet of Calcium Treatment on Low Carbon Al-Killed Steel in CSP Process

摘要：

　　In order to improve the cleanliness and castability of low carbon Al-killed steel for CSP production line of Wuhan Iron and Steel Corporation,the change of contents and inclusions of molten steel with different calcium treatment was studied by industrial trial.And the effect of calcium treatment was also analyzed by thermodynamics.The results show that inclusions modification can be realized quickly by calcium treatment.The inclusions are mainly CaS-Al2O3-CaO with high CaS content after calcium treatment.Then the inclusions become fine globular Al2O.3-CaO and CaS-Al2O3-CaO with low CaS content in following refining and casting.The compositions of inclusions are influenced obviously by reoxidation.Thermodynamic study reveals that inclusions modification can be realized by only a small amount of [Ca].The contents of [Ca],[Al] and [S] should be considered at the same time to realize inclusions modification by calcium treatment.And inclusions modification in the tundish is the most important.

关键词： low carbon Al-killed steel calcium treatment inclusions modification thermodynamics

作者: Zhu Wanjun Ou Tie Wang Chunfeng Shen Jisheng

作者单位: Key Labora1ory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan Unive Key Labora1ory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan Unive CSP Plant, Structural and Bar Integrated Mill, Wuhan Iron and Steel Corporation, Wuhan 430080, China

会议类型: 国际会议

会议名称: The 4th Australia-China-Japan Joint Symposium on Iron and Steelmaking(第四届中日澳钢铁冶金学术会议)

会议地点: 沈阳

会议语种:英文

页码: 244-249

在线出版日期: 2012-11-03（万方平台首次上网日期，不代表论文的发表时间）