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Evaluating oxygen level of Si-deoxidized H13 die steel using ferrous oxide-containing slags at 1873 K
Journal of Iron and Steel Research International ( IF 3.1 ) Pub Date : 2021-03-24 , DOI: 10.1007/s42243-020-00532-8
Shao-ying Li , Bin Li , Xing-ming Zhao , Xiao-jun Xi , Sheng-chao Duan , Jing Guo , Han-jie Guo

Laboratory-scale experiments were conducted to investigate the oxygen content of Si-deoxidized H13 die steel by ferrous oxide-containing slags at 1873 K. The calculation of thermodynamics and kinetics was performed to evaluate the oxygen level of molten steel through [Si]–[O] equilibrium and [Fe]–[O] equilibrium. The results show that as the FeO content in slag increases, the oxygen content with [Si]–[O] equilibrium (w([O])Si) has almost no change. When both the oxygen content with [Fe]–[O] equilibrium (w([O])Fe) and w([O])Si are less than the initial oxygen content in steel (w(TO)i), the oxygen content in steel (w([O])) depends on the higher value between w([O])Si and w([O])Fe. In the case of w([O])Fe > w(TO)i, the value of w([O]) is the difference between the sum of w(TO)i and w([O])Si and the value of w([O])Fe. The reaction rates of [Si]–[O] and [Fe]–[O] are equal, which are controlled by the mass transfer of oxygen in molten steel. The evaluation method is suitable to the whole smelting process of Si-deoxidized H13 die steel.



中文翻译:

使用含氧化亚铁的炉渣在1873 K评估Si脱氧H13模具钢的氧含量

进行了实验室规模的实验,研究了含氧化亚铁的渣在1873 K下对Si脱氧H13模具钢的氧含量。通过[Si]-[进行了热力学和动力学计算,以评估钢水的氧含量。 O]平衡和[Fe] – [O]平衡。结果表明,随着渣中FeO含量的增加,具有[Si] – [O]平衡(w([O])Si)的氧含量几乎没有变化。当具有[Fe] – [O]平衡态的氧含量(w([O])Fe)和w([O])Si都小于钢中的初始氧含量(w(TO)i)时,氧钢中的含量(w([O]))取决于w([O])Siw([O])Fe之间的较高值。在的情况下,瓦特([O])的Fe  > 瓦特(TO),的值瓦特([O])是的总和之间的差瓦特(TO)瓦特([O])的Si和值的w([O])Fe。[Si]-[O]和[Fe]-[O]的反应速率相等,这受钢水中氧气的质量转移控制。该评估方法适用于硅脱氧H13模具钢的整个熔炼过程。

更新日期:2021-03-25
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