05-04-2018 дата публикации
Номер: US20180096767A1
Принадлежит:
Disclosed are a non-oriented electrical steel plate with low iron loss and high magnetic conductivity and a manufacturing process therefor. The casting blank of the steel plate comprises the following components: Si: 0.1-2.0 wt %, Al: 0.1-1.0 wt %, Mn: 0.10-1.0 wt %, C: ≦0.005 wt %, P: ≦0.2 wt %, S: ≦0.005 wt %, N: ≦0.005 wt %, the balance being Fe and unavoidable impurities. The magnetic conductivity of the steel plate meets the following relationship formula: μ+μ+μ≧13982−586.5P; μ+μ+μ≧10000, wherein Pis the iron loss at a magnetic induction intensity of 1.5 T at 50 Hz; μ, μ, and μis are relative magnetic conductivities at induction intensities of 1.0 T, 1.3 T, and 1.5 T at 50 Hz, respectively. The steel plate can be used for manufacturing highly effective and ultra-highly effective electric motors. 1. A non-oriented electrical steel sheet , the casting slab of which comprises: Si: 0.1˜2.0 wt %; Al: 0.1˜1.0 wt %; Mn: 0.10˜1.0 wt %; C: ≦0.005 wt %; P: ≦0.2 wt %; S: ≦0.005 wt %; N: ≦0.005 wt %; and balance being Fe and other unavoidable impurities , and the magnetic permeability of the steel sheet satisfies the following formulas (1) and (2):{'br': None, 'sub': 10', '13', '15', '15/50, 'i': 'P', 'μ+μ+μ≧13982−586.5\u2003\u2003(1);'}{'br': None, 'sub': 10', '13', '15, 'μ+μ+μ≧10000\u2003\u2003(2),'}{'sub': 10', '13', '15', '15/50', '15/50, 'wherein μ, μand μrespectively represent the relative magnetic permeability at magnetic inductions of 1.0 T, 1.3 T and 1.5 T at 50 Hz; Prepresents the iron loss at 50 Hz and under a magnetic induction of 1.5 T, Pin formula (1) is calculated as a dimensionless numerical value.'}2. The steel sheet according to claim 1 , wherein it further contains one or both of Sn and Sb with a total amount of ≦0.3 wt %.3. The steel sheet according to or claim 1 , wherein it satisfies formula (3):{'br': None, 'sub': 10', '13', '15, 'μ+μ+μ≧11000\u2003\u2003(3).'}48.-. (canceled) The present invention belongs to the metallurgy field. Particularly, the ...
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