ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2008, Vol. 29 ›› Issue (3): 7-9.

• 试验研究 • 上一篇    下一篇

超低氧弹簧钢脱磷回磷的热力学研究

王郢1, 李海波1, 于会香1, 周红霞1, 郭佳2, 王新华1   

  1. 1北京科技大学冶金与生态工程学院,北京100083 ;
    2北京科技大学材料科学与工程学院,北京100083
  • 收稿日期:2007-11-23 出版日期:2008-06-01 发布日期:2022-12-20
  • 作者简介:王 郢(1979-),男,博士研究生,2001年武汉科技大学毕业,从事特殊钢冶炼技术研究。 ​
  • 基金资助:
    973新一代钢铁材料重大基础研究基金资助项目 (2004C13619106)

A Study on Thermodynamics of Dephosphorization and Rephosphorization of Ultra-Low Oxygen Spring Steel

Wang Ying1,  Li Haibo1,  Yu Huixiang1,  Zhou Hongxia1,  Guo Jia2, Wang Xinhua1   

  1. 1 Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083 ;
    2 Material Science and Engineering School, University of Science and Technology, Beijing 100083
  • Received:2007-11-23 Published:2008-06-01 Online:2022-12-20

摘要: 采用80 t LD-LF-VD-CC流程生产超低氧弹簧钢(0.60%C、1.8%Si、0.8%Mn、5×10-6O),对精炼过程脱磷回磷进行了热力学分析和研究。结果表明,碱度≥4,FeO+MnO≤1%高碱度低氧化性炉渣精炼弹簧钢时,回磷现象不可避免,但还原脱磷有可能发生。通过转炉挡渣出钢,保持精炼渣高碱度,精炼时避免强搅拌,在高碱低氧化性炉渣下,可有效减少精炼过程钢水回磷,可控制[P]为0.010%。

关键词: 超低氧弹簧钢, LF精炼, 脱磷, 回磷, 热力学

Abstract: The thermodynamics on dephosphorization and rephosphorization of an ultra-low oxygen spring steel (0. 60C, 1. 8Si, 0. 8Mn, 5 x 10-6O) during refining process with 80 t LD-LF-VD-CC flow sheet has been analyzed and studied. Results show that as spring steel refined by basicity ≥ 4, FeO + MnO ≤ l% high basicity low oxidation slag, the rephosphorization couldn't be avoided but the reductive dephosphorization was likely to occur. With LD tapping by stopping slag, avoiding strongly stirring during refining, and using high basicity low oxidation slag, it is available to decrease liquid steel rephosphorization during refining and control 0.010% [P].