叶片钢1Cr12Ni2Mo2VN 1.1t电渣锭重熔工艺的优化

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叶片钢1Cr12Ni2Mo2VN电极坯母材（/%：0.10C,0.24Si,0.81Mn,0.013P,0.002S,11.75Cr,2.63Ni,1.70Mo,0.32V,0.033N）的生产流程为30 t EAF-VOD-LF-2.67 t铸锭-退火-Φ250 mm锻坯。通过将ANF-6二元渣改成高纯度、低杂质NEU_D06预熔四元渣,平均熔速由5.27 kg/min降低至3.5-4.0 kg/min等工艺措施,成功地生产出Φ430mm叶片钢1Cr12Ni2Mo2VN电渣锭（/%：0.10-0.12C,0.75-0.86Mn,0.21-0.24Si,0.011-0.014P,0.000 1S,11.76-11.82Cr,2.54-2.61Ni,1.63-1.71Mo,0.31-0.32V,0.039N）。检验结果表明,电渣锭的组织为马氏体＋0.5%-1.5%8-铁素体,非金属夹杂物总和为1.5-2.0级,[0]15×10^-6-17×10^-6,[H]1.24×10^-6-1.47×10^-6,保证了电渣钢的质量。