Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet

A method for manufacturing a non-oriented electrical steel sheet, the method comprising:

• hot rolling a steel slab to form a hot rolled sheet, the steel slab comprising a chemical composition containing, in mass %, C:
• 0.005% or less, Si:
• more than 1.5% and 4.5% or less, Mn:
• 0.02% to 2.0%, Sol. Al:
• 0.001% or less, P:
• 0.2% or less, S+Se:
• more than 0% and 0.0010% or less wherein both S and Se are present in an amount greater than 0%, N:
• 0.005% or less, O:
• 0.005% or less, and Cu:
• 0.03% to 0.08%, and the balance consisting of Fe and incidental impurities, and a number density of Cu sulfides and Cu selenides having a diameter of 10 nm to 200 nm is 10/μm2 or lower in total;
• wherein both Cu sulfides and Cu selenides are present in an amount greater than 0/μm2;
• then, optionally, subjecting the hot rolled sheet to hot band annealing;
• then subjecting the sheet to cold rolling either once, or twice or more with intermediate annealing performed therebetween, so as to have a target thickness;
• and
• then subjecting the sheet to final annealing, wherein the final annealing includes a heating process that is performed under a condition of a heating rate from 100° C. to 700° C. of 40° C./s or higher and a final annealing temperature of 900° C. to 1100° C.