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US 2021/0340651 A1Published application
Non-oriented electrical steel sheet and manufacturing method therefor
AssigneePosco
InventorSeil LEE
Life of this patent
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Abstract
A non-oriented electrical steel sheet according to an embodiment of the present invention includes: Si at 1.5 to 4.0 wt %, Al at 0.001 to 0.011 wt %, Mn at 0.05 to 0.40 wt %, S at 0.0001 to 0.01 wt %, As at 0.003 to 0.015 wt %, Mg at 0.0007 to 0.003 wt %, and the balance including Fe and other impurities unavoidably added thereto.
Claims19
A non-oriented electrical steel sheet, comprising:
- Si at 1.5 to 4.0 wt %, Al at 0.001 to 0.011 wt %, Mn at 0.05 to 0.40 wt %, S at 0.0001 to 0.01 wt %, As at 0.003 to 0.015 wt %, Mg at 0.0007 to 0.003 wt %, and the balance including Fe and other impurities unavoidably added thereto.
A manufacturing method of a non-oriented electrical steel sheet, comprising:
- heating a slab containing Si at 1.5 to 4.0 wt %, Al at 0.001 to 0.011 wt %, Mn at 0.05 to 0.40 wt %, S at 0.0001 to 0.01 wt %, As at 0.003 to 0.015 wt %, Mg at 0.0007 to 0.003 wt %, and the balance including Fe and other impurities unavoidably added thereto;
- hot-rolling the slab to manufacture a hot-rolled sheet;
- cold-rolling the hot-rolled sheet to manufacture a cold-rolled sheet;
- and
- final annealing the cold-rolled sheet.
2 more elements
Dependencies are inferred from the claim text.