A kind of non-oriented electrical steel under low magnetic field and its production method
A technology of oriented electrical steel and low magnetic field, which is applied in the field of non-oriented electrical steel and its production, can solve the problems of poor magnetization performance of non-oriented electrical steel, and achieve the effect of benefiting magnetization ability, prolonging the holding time and reducing the cooling rate
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[0048] In this implementation, a non-oriented electrical steel under low magnetic field includes the following components in weight percentage: C: 0.0019%, Si: 2.9%, Mn: 0.25%, P: 0.003%, Als: 0.85%, S : 0.001%, N: 0.0007%, Ti: 0.0015%, the rest is iron and unavoidable impurities; the production method of the non-oriented electrical steel under the low magnetic field is as follows:
[0049] Preparation of slab: adding molten iron to the RH furnace for refining and alloying treatment, adding various alloying elements according to the design requirements of the components; continuously casting the molten steel refined in the RH furnace into a slab with a thickness of 220mm;
[0050] Slab heating: the slab after continuous casting is cooled and then enters the heating furnace, the temperature of the heating furnace is 1180°C, and the time is 210min;
[0051] Hot-rolled coiling: the heated slab is rough-rolled to 34mm in 3 passes, finished in 7 passes to 2.0mm in thickness, and co...
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