将不同返回料添加比例的成分样品制备为碎屑状和棒状，其中碎屑状用于气体元素分析，棒状用于合金元素的分析。使用TC-300氮氧分析仪对合金中O、N元素进行分析。采用ICP-AES分析仪对合金中Al、Co、Mo、W、Ti元素含量进行分析；合金中Cr元素含量检测方法参照ASTM E1473-16。分析所得不同返回料添加比例母合金锭的成分，获得返回了添加比例对合金中O、N含量和脱除率的影响规律。

The component samples with different return material addition ratios were prepared into crumb-shaped and rod-shaped forms. Among them, the crumb-shaped form was used for the analysis of gas elements, and the rod-shaped form was used for the analysis of alloy elements. The elements O and N in the alloy were analyzed using the TC-300 nitrogen-oxygen analyzer. The contents of Al, Co, Mo, W and Ti elements in the alloy were analyzed by using the ICP-AES analyzer. The detection method of Cr element content in alloys refers to ASTM E1473-16. The composition of master alloy ingots with different addition ratios of returned materials was analyzed, and the influence law of the addition ratio of returned materials on the contents of O and N and the removal rate in the alloy was obtained.