Production method for high-frequency thin-ribbon silicon steel
A production method and thin strip technology, applied in the field of steel rolling, can solve the problems of long production cycle, deterioration of cold workability, increased difficulty in production control, etc., and achieve the effect of improving work efficiency, avoiding the increase of cold brittleness, and having favorable effects of isotropy of finished products.
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Embodiment 1
[0027] The mass percentage content of the main alloy (silicon + manganese + aluminum) is 3.81%, of which 2.95% Si, 0.53% Al, 0.33% Mn;
[0028] After refining and decarburization, use silicon deoxidation, carry out silicon alloying, and then carry out aluminum alloying; composition control: S: 0.0085%, N: 0.0050%, (Ni+V+Ti): 0.022%; continuous casting superheat 25 ℃, casting speed 0.5m / min, columnar crystal ratio 56%; furnace temperature for hot rolling: 450℃, heating temperature 1100℃, heating time 220 minutes.
Embodiment 2
[0030] The mass percentage content of the main alloy (silicon + manganese + aluminum) is 4.01%, of which 2.75% Si, 0.83% Al, 0.43% Mn;
[0031] After refining and decarburization, use silicon deoxidation, carry out silicon alloying, and then carry out aluminum alloying; composition control: S: 0.0105%, N: 0.0035%, (Ni+V+Ti): 0.025%; continuous casting superheat 20 ℃, casting speed 0.9m / min, columnar crystal ratio 67%; furnace temperature for hot rolling: 390℃, heating temperature 1150℃, heating time 190 minutes.
Embodiment 3
[0033] The mass percentage content of the main alloy (silicon + manganese + aluminum) is 4.70%, of which 3.32% Si, 1.13% Al, 0.25% Mn;
[0034] After refining and decarburization, use silicon deoxidation, carry out silicon alloying, and then carry out aluminum alloying; composition control: S: 0.0010%, N: 0.0045%, (Ni+V+Ti): 0.018%; continuous casting superheat 30 ℃, casting speed 0.6m / min, columnar crystal ratio 75%; furnace temperature for hot rolling: 490℃, heating temperature 1120℃, heating time 210 minutes.
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