Double-oriented electrical steel sheet, and method for producing same
AssigneePosco
InventorsSe Il Lee, Hyunwoo Mun
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Abstract
A double-oriented electrical steel sheet according to an example of the present invention comprises, by weight 2.0 to 4.0 wt % of Si, 0.01 to 0.04 wt % of Al, 0.0004 to 0.02 wt % of S, 0.05 to 0.3 wt % of Mn, at most 0.01 wt % (exclusive of 0 wt %) of N, at most 0.005 wt % (exclusive of 0 wt %) of C, 0.005 to 0.15 wt % of P, 0.001 to 0.005 wt % of Ti, and 0.0001 to 0.005 wt % of Mg, with the balance being Fe and other inevitable impurities, wherein the area fraction of crystal grains having an orientation within 15° from {100}<001> is 60 to 99%, and the area fraction of crystal grains having an orientation within 15° from {100}<025> is 1 to 30%.
Claims8
A double-oriented electrical steel sheet comprising, by weight:
- 2.0 to 4.0% of Si, 0.01 to 0.04% of Al, 0.0004 to 0.02% of S, 0.05 to 0.3% of Mn, 0.01% or less (exclusive of 0%) of N, 0.005% or less (exclusive of 0%) of C, 0.005 to 0.15% of P, 0.001 to 0.005% of Ti, 0.0001 to 0.005% of Ca, and 0.0001 to 0.005% of Mg, with a balance of Fe and other inevitable impurities, wherein an area fraction of crystal grains having an orientation within 15° or less from {100}<001> is 60 to 99%, and an area fraction of crystal grains having an orientation within 15° or less from {100}<025> is within 1 to 30%, wherein:
- the double-oriented electrical steel sheet satisfies the following Equation 1:
- 10×([Ti]+[Ca]+[Mg])≥[Al] [Equation 1]
- wherein [Ti], [Ca], [Mg], and [Al] represent contents (wt %) of Ti, Ca, Mg, and Al, respectively.
Dependencies are inferred from the claim text.