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
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 t
he structure of ESR ingot is martensite +0.5% 〜1.5% δ ferrite