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试验GCrl5轴承钢(/%:1.00C,0.20Si,0.39Mn,0.015P,0.005S,1.50Cr,0.003Ti,0.015Als)的冶炼工艺流程为预脱硫铁水-100tBOF—LF-RH-200mm×200mm坯连铸。主要工艺特点为BOF出钢过程加1.2kg/t铝脱氧,LF精炼采用白渣操作,精炼初渣主要成分为(/%:22A12O,,56CAO,10SiO2,SMgO),RH67Pa,25min,连铸过程保护浇注。两炉钢冶炼分析结果表明,钢中氧氮含量在RH破空样品中同时达到最低分别为7