The non directivity electromagnetic steel sheet, and the production manner which relative possess high magnetic induction and high intensity

摘要

The non directivity electromagnetic steel sheet, and the production manner which relative possess high magnetic induction and high intensity 1) to include smelting and casting, as for percentage by weight of component of electromagnetic steel sheet: C 0.0040% and Si are 2.50% - 4.00%, Al is 0.20% - 0.80%, Cr is 1.0 - 8.0%, Ni is 0.5 - 5.0%, Mn 0.50%, P 0.30%, S 0.0020%, N 0.0030%, Ti 0.0030%, Nb 0.010%, V 0.010%, C+S+N+Ti 0.010%, and the remainder substantially are Fe and the inevitable impurity; To do smelting, RH vacuum process and cast, furthermore, 2) hot rolling; 3) It includes with normalizing, temperature is 850 - the 950 , time is 0.5 - 3 minutes, next, with 5 - 15 /s the annealing it is done in 650, - the 750 furthermore is cooled suddenly below the 100 with 20 - 70 /s; Furthermore, 4) the pickling and cold-rolled are included, entire screw down rate is 70% or more; Furthermore, 5) annealing is included, temperature it is 800 - the 1000 , 5 - 60s containment, next, with 3 - 10 /s the annealing it is done in 650, - the 750 furthermore, is cooled suddenly below the 100 with 20 - 70 /s. This invention, the case of production the high intensity and can produce the non directivity electromagnetic steel sheet which possesses high magnetic induction without increasing difficulty.