Non-oriented electrical steel sheet and manufacturing method therefor

A non-oriented electrical steel sheet, comprising

• by weight, 1.0% to 4.0% of Si, 0.001% to 0.01% of Al, 0.002% to 0.009% of S, 0.01% to 0.3% of Mn, 0.001% to 0.004% of N, 0.004% or less and 0% exclusive of C, 0.003% or less and 0% exclusive of Ti, 0.005% to 0.07% of Cu, 0.05% to 0.2% of either or both of Sn and P, and a balance amount of Fe and impurities, and satisfying [Equation 1], wherein a number of an inclusion of N compositely with S is larger than a number of an inclusion of N alone in the steel sheet,
• log
• ⁢
• (
• [
• Mn
• ]
• +
• [
• Cu
• ]
• )
• ×
• [
• S
• ]
• (
• [
• Al
• ]
• +
• [
• Ti
• ]
• )
• ×
• [
• N
• ]
• ≥
• 0.85
• [
• Equation
• ⁢
• ⁢
• 1
• ]
• in [Equation 1], [Mn], [Cu], [S], [Al], [Ti], and [N] denote each content wt % of Mn, Cu, S, Al, Ti, and N,
• wherein a volume fraction of a <100>∥ND crystal grain is greater than or equal to 15%, a volume fraction of a <100>∥ND crystal grain is greater than a volume fraction of a <111>∥ND crystal grain, and an average crystal grain size is smaller than the sheet thickness, wherein <100>∥ND means that a <100> axis of the crystal grain is within 15° from an axis (ND) perpendicular to an axis of the surface of the steel sheet and <111>∥ND means that a <111> axis of the crystal grain is within 15° from an axis (ND) perpendicular to an axis of the surface of the steel sheet.