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 ›› 2010, Vol. 31 ›› Issue (6): 16-20.

• 试验研究 • 上一篇    下一篇

镁对低碳铝镇静钢SPHC中夹杂物变性的影响

冯捷1,2,包燕平1,崔衡1   

  1. 1北京科技大学冶金与生态工程学院,北京100083;
    2河北科技大学材料科学与工程学院,石家庄050018
  • 出版日期:2010-12-01 发布日期:2022-10-27
  • 作者简介:冯 捷(1963-),男,博士研究生,副教授,钢纯净化生产技术研究。

Effect of Magnesium on Modification of Inclusions in Low Carbon Aluminium-Killed Steel SPHC

Feng Jie1,2, Bao Yanping1, Cui Heng1   

  1. 1 Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083 ;
    2 School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018
  • Published:2010-12-01 Online:2022-10-27

摘要: 运用热力学计算分析了镁对SPHC钢(0.065%C、0.025%Al)中夹杂物的作用,并结合80 t顶底复吹转炉流程工业试验,研究镁对SPHC钢中夹杂物的影响机理。热力学计算结果证明,当[Al]2/a[Mg]3≤7.69×1010,钢中就会生成单独的MgO·Al2O3;对SPHC钢进行喂0.875 kg/t镁线的工业试验结果表明,镁处理可细化夹杂,使团簇状Al2O3变为细小的MgO·Al2O3夹杂,MnS夹杂也得到了变性,夹杂物数量减少,提高了钢液的纯净度。

关键词: 镁处理, SPHC钢, 热力学计算, Al2O3, MgO?Al2O3

Abstract: The effect of magnesium on modification of non-metallic inclusions in steel SPHC (0. 065% C, 0. 025 % Al) is analyzed by thermodynamic calculation, and combined with commercial test by using an 80 t top and bottom combined blown converter flow sheet, the mechanism for influence of magnesium on inclusions in steel SPHC is studied. Thermodynamic calculation results prove that as[Al]2/a[Mg]3≤7. 69 x 1010, the inclusion MgO • Al2O3 alone forms in steel ; Commercial test with feeding 0. 875 kg/t magnesium wire in steel SPHC shows that the inclusions are tine by magnesium treatment i. e. the round cluster Al2O3 is modified to fine inclusion MgO • Al2O3 while the inclusion MnS is also modified, the amount of inclusions in steel decreases and the cleanliness of steel in advanced.

Key words: Magnesium Treatment, Steel SPHC, Thermodynamic Calculation, Al2O3, MgO?Al2O3