NON-ORIENTED ELECTRICAL STEEL SHEET, IRON CORE AND MOTOR CORE, AND METHOD FOR MANUFACTURING IRON CORE AND MOTOR CORE
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United States of America
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Issued Date -
Jan 16, 2025
app pub date -
Oct 12, 2022
filing date -
Oct 12, 2022
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Abstract
Provided is a non-oriented electrical steel sheet including a base steel sheet and an insulating coating film formed on a surface of the base steel sheet, wherein the base steel sheet has a chemical composition containing, in mass %, C: 0.0030% or less, Si: 3.2 to 6.5%, Mn: 0.05 to 3.5%, P: 0.005 to 0.10%, S: 0.0030% or less, Al: 1.0% of less, Ti: 0.0030% or less, B: 0.0010% or less, Mo: 0.030% or less, V: 0.0010% or less, Ca: 0 to 0.0050%, Mg: 0 to 0.0050%, and REM: 0 to 0.0050%, with a balance being Fe and impurities, and satisfying [S-5/3×Mg-4/5×Ca-1/4×REM<0.0005], and the insulating coating film has a chemical composition satisfying [[M]-[C]+1/2×[O]>0].
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