A kind of silicon steel, preparation method and application
A silicon steel and steel billet technology, applied in the direction of magnetic circuits characterized by magnetic materials, can solve the problems of low mechanical strength of silicon steel and cannot meet the needs of electricians, and achieve good surface quality, good electromagnetic properties and mechanical properties, and uniform thickness Effect
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Embodiment 1
[0051] (1) Using the method of vacuum smelting and casting, the mass percentages of the contained chemical elements are: Si 3.5%, C 0.05%, P 0.16%, S 0.04%, Mn 0.60%, Cr 0.08%, B 0.01% , the balance is Fe and other unavoidable impurities silicon steel slabs;
[0052] (2) Hot rolling the billet at 1250-1280°C to obtain a silicon steel plate with a thickness of 2mm;
[0053] Wherein, the hot rolling is first rough rolling and then finish rolling;
[0054] Wherein, the rough rolling is high-speed rolling with large downforce, and the amount of cooling water is increased to control the rolling temperature at 1250-1280°C;
[0055] (3) Coil the plate obtained after hot rolling at 400°C;
[0056] (4) Normalizing and annealing the coiled plate obtained after coiling at 1200° C. for 0.5 h, then immersing the coiled plate after normalizing annealing with a hydrochloric acid solution with a concentration of 15% for 15 minutes to remove the iron oxide scale on the surface of the coiled ...
Embodiment 2
[0059] (1) Using the method of vacuum smelting and casting, the mass percentages of the contained chemical elements are: Si 3.6%, C 0.80%, P 0.17%, S 0.05%, Mn 0.63%, Cr 0.09%, B 0.06% , the balance is Fe and other unavoidable impurities silicon steel slabs;
[0060] (2) Hot rolling the billet at 1250-1280°C to obtain a silicon steel plate with a thickness of 2mm;
[0061] Wherein, the hot rolling is first rough rolling and then finish rolling;
[0062] Wherein, the rough rolling is high-speed rolling with large downforce, and the amount of cooling water is increased to control the rolling temperature at 1250-1280°C;
[0063] (3) Coil the plate obtained after hot rolling at 400°C;
[0064] (4) Normalizing and annealing the coiled plate obtained after coiling at 1200° C. for 1 hour, and then immersing the coiled plate after normalizing annealing with a hydrochloric acid solution with a concentration of 15% for 10 minutes to remove the iron oxide scale on the surface of the co...
Embodiment 3
[0067] (1) Using the method of vacuum smelting and casting, the mass percentages of the chemical elements contained are: Si 3.7%, C 1.5%, P 0.18%, S 0.05%, Mn 0.65%, Cr 0.09%, B 0.07% , the balance is Fe and other unavoidable impurities silicon steel slabs;
[0068] (2) Hot rolling the billet at 1250-1280°C to obtain a silicon steel plate with a thickness of 3mm;
[0069] Wherein, the hot rolling is first rough rolling and then finish rolling;
[0070] Wherein, the rough rolling is high-speed rolling with large downforce, and the amount of cooling water is increased to control the rolling temperature at 1250-1280°C;
[0071] (3) Coil the plate obtained after hot rolling at 500°C;
[0072] (4) Normalizing and annealing the coiled plate obtained after coiling at 1200° C. for 0.5 h, and then immersing the coiled plate after normalizing annealing with a concentration of 15% hydrochloric acid solution for 8 minutes to remove the iron scale on the surface of the coiled plate;
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