A preparation method of high-performance electromagnetic shielding steel plate with a thickness of 1-5 mm
An electromagnetic shielding and high-performance technology, applied in the metallurgical field, can solve the problems of difficult to obtain large grain size and low proportion of good texture, and achieve the effect of improving the magnetic properties of the finished product, promoting large-scale application, and being easy to process and use.
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Embodiment 1
[0032] In this embodiment, the preparation method of a high-performance electromagnetic shielding steel plate with a thickness of 1-5 mm is carried out according to the following steps:
[0033] (1) Molten steel is smelted according to the set composition, and its composition is by weight percentage: C 0.005%, Si 1.5%, Mn0.2%, Cr 0.5%, P 0.04%, S 0.005%, N 0.002%, O 0.002%, Al 0.002%, Nb 0.002%, V0.002%, Ti 0.002%, the balance is Fe;
[0034] (2) Strip continuous casting process: molten steel enters the tundish through the gate, the preheating temperature of the tundish is 1230°C, and the superheating degree is controlled at 50°C. The speed is 55m / min, the liquid level of the molten pool is controlled to be 150mm, and the thickness of the cast strip is controlled to be 2.5mm;
[0035] (3) After the cast strip is taken out of the roll, it is naturally cooled to a hot rolling mill under inert atmosphere conditions. The hot rolling start temperature is 975° C., the final rolling t...
Embodiment 2
[0043] In this embodiment, the preparation method of a high-performance electromagnetic shielding steel plate with a thickness of 1-5 mm is carried out according to the following steps:
[0044] (1) Molten steel is smelted according to the set composition, and its composition is by weight percentage: C 0.003%, Si 0.5%, Mn1.0%, Cr 0.5%, P 0.04%, S 0.002%, N 0.002%, O 0.002%, Al 0.002%, Nb 0.002%, V0.002%, Ti 0.002%, the balance is Fe;
[0045] (2) Strip continuous casting process: the molten steel enters the tundish through the gate, the preheating temperature of the tundish is 1250°C, and the superheating degree is controlled at 70°C. The speed is 30m / min, the liquid level of the molten pool is controlled to be 180mm, and the thickness of the casting belt is controlled to be 5.0mm;
[0046] (3) After the cast strip is taken out of the roll, it is naturally cooled to a hot rolling mill under inert atmosphere conditions, the hot rolling start temperature is 950 ° C, the final r...
Embodiment 3
[0053] In this embodiment, the preparation method of a high-performance electromagnetic shielding steel plate with a thickness of 1-5 mm is carried out according to the following steps:
[0054] (1) Molten steel is smelted according to the set composition, and its composition is by weight percentage: C 0.0045%, Si 2.0%, Mn1.0%, Cr 0.2%, P 0.01%, S 0.002%, N 0.002%, O 0.002%, Al 0.002%, Nb 0.002%, V0.002%, Ti 0.002%, the balance is Fe;
[0055] (2) Strip continuous casting process: the molten steel enters the tundish through the gate, the preheating temperature of the tundish is 1240°C, and the superheating degree is controlled at 40°C. The speed is 55m / min, the liquid level of the molten pool is controlled to be 100mm, and the thickness of the casting belt is controlled to be 1.0mm;
[0056] (3) After the cast strip is taken out of the roll, it is naturally cooled to a hot rolling mill under inert atmosphere conditions. The hot rolling start temperature is 995° C., the final ...
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