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US 2022/0010402 A1Published application
Grain-oriented electrical steel sheet and manufacturing method therefor
AssigneePosco
InventorsHyung Don JOO, Kyung-Jun KO, Chang Soo PARK, Jae Kyoum KIM, Sang-Woo LEE, Jin-Wook SEO
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Abstract
A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, Si at 1.0 to 7.0%, Mn at 0.5% or less (excluding 0%), Al at 0.005% or less (excluding 0%), S at 0.0055% or less (excluding 0%), one or more of Ba and Y at 0.005 to 0.5%, one or more of Sn at 0.02 to 0.15%, Sb at 0.01 to 0.08%, and Ni at 0.02 to 0.5%, and the balance of Fe and inevitable impurities.
Claims16
A grain-oriented electrical steel sheet including:
- in wt %, Si at 1.0 to 7.0%, Mn at 0.5% or less (excluding 0%), Al at 0.005% or less (excluding 0%), S at 0.0055% or less (excluding 0%), one or more of Ba and Y at 0.005 to 0.5%, and
- one or more of Sn at 0.02 to 0.15%, Sb at 0.01 to 0.08%, and Ni at 0.02 to 0.5%, and the balance of Fe and inevitable impurities.
A manufacturing method of a grain-oriented electrical steel sheet, comprising:
- heating a slab including:
- in wt %, Si at 1.0 to 7.0%, C at 0.005 to 1.0%, Mn at 0.5% or less (excluding 0%), Al at 0.005% or less (excluding 0%), S at 0.0055% or less (excluding 0%), one or more of Ba and Y at 0.005 to 0.5%, one or more of Sn at 0.02 to 0.15%, Sb at 0.01 to 0.08%, and Ni at 0.02 to 0.5%, and the balance of Fe and inevitable impurities;
- hot-rolling the slab to manufacture a hot-rolled sheet;
- cold-rolling the hot-rolled sheet to manufacture a cold-rolled sheet;
- primary recrystallization annealing the cold-rolled sheet;
- and
- secondary recrystallization annealing the cold-rolled sheet subjected to the primary recrystallization annealing.
4 more elements
Dependencies are inferred from the claim text.