根据气-固反应机理中的未反应核模型分析高温合金在熔炼过程中的限制性环节，然后根据一级反应理论计算以[O]在液相边界层中的传质为限制性环节的脱氧速率，其中包含不同返回料添加比例和不同返回次数熔炼过程中的脱氧速率。

Based on the unreacted core model in the gas-solid reaction mechanism, the restrictive links of the superalloy during the smelting process were analyzed. Then, the deoxidation rate with the mass transfer of [O] in the liquid boundary layer as the restrictive link was calculated according to the first-order reaction theory, which included the deoxidation rate during the smelting process with different return material addition ratios and different return times.