Abstract: The production flowsheet of electrode of blade steel 1Cr12Ni2Mo2VN (/% : 0.10C, 0.24Si, 0.81 Mn, 0.013P, 0. 002S, 11.75Cr, 2.63Ni, 1.70Mo, 0.32V, 0.033N) is 30 t EAF-VOD-LF-2.67 t ingot casting-annealing- Φ250 mm bloom forging process. With the process measures including to modify ANF-6 binary slag to high cleanliness low inclusion NEU_D06 premelting quaternary slag, decrease the average remelting rate from 5.27 kg/min to 3.5-4.0 kg/min, the Φ430 mm blade steel 1Cr12Ni2Mo2VN ESR ingots (/% : 0.10-0.12C, 0.75-0.86Mn, 0.21-0.24Si, 0.011-0.014P, 0.000IS, 11.76-11.82Cr, 2.54-2.61Ni, 1.63-1.71Mo, 0.31-0.32V, 0.039N) are successfully produced. Examination results show that the structure of ESR ingot is martensite +0.5% 〜1.5% δ ferrite , total rating of nonmetallic inclusions is 1.5-2.0, the [O] is 15 x 10^-6-17 X 10^-6 and the [H] is 1.24 x 10^-6-1.47 x 10^-6 to insure the quality of ESR steel.

Key words: Blade Steel 1Cr12Ni2Mo2VN, ESR, Inclusion, Process Optimization

摘要： 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NEUD06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，0.0001S，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% δ-铁素体，非金属夹杂物总和为1.5~2.0级，[O]15×10^-6~17×10^-6，[H]1.24×10^-6~1.47×10^-6，保证了电渣钢的质量。

关键词: 叶片钢1Cr12Ni2Mo2VN, 电渣重熔, 夹杂物, 工艺优化