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.

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]）_Si和w（[O]）_Fe之间的较高值。在的情况下，瓦特（[O]）_的Fe  > 瓦特（TO）_我，的值瓦特（[O]）是的总和之间的差瓦特（TO）_我和瓦特（[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。