Method for producing non-oriented electrical steel sheet

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

• hot-rolling a slab with a component composition including C:
• 0.005 mass % or less, Si:
• 3.0 to 5.0 mass %, Al:
• 3.0 mass % or less, Mn:
• 3.0 mass % or less, P:
• 0.10 mass % or less, S:
• 0.005 mass % or less, N:
• 0.005 mass % or less, Cu:
• 0.01 to 0.5 mass %, and O:
• 0.005 mass % or less, with the balance being Fe and unavoidable impurities;
• performing hot-band annealing;
• performing cold rolling involving one cold rolling pass, or two or more cold rolling passes with intermediate annealing between each cold rolling pass to obtain a cold-rolled sheet;
• and
• performing finishing annealing using a continuous annealing line including a heating zone, a soaking zone, and a cooling zone,
• characterized in that
• the finishing annealing is performed by setting a dew point DH of a furnace atmosphere in a region where the steel sheet temperature is in the range from 500° C. to 800° C. in the heating zone to −20° C. or lower and also by setting a dew point DS of the furnace atmosphere in a region where the steel sheet temperature is in the range from above 800° C. to a soaking temperature in the heating zone, as well as in a region where the steel sheet is in the soaking zone, to −40° C. or lower, while maintaining a relationship of DH>DS.