METHOD FOR PRODUCING DIRECTIONAL ELECTROMAGNETIC STEEL SHEET

摘要

A predetermined steel containing Te: 0.0005 mass% to 0.0050 mass% is heated to 1320°C or lower to be subjected to hot rolling, and is subjected to annealing, cold rolling, decarburization annealing, and nitridation annealing, and thereby a decarburized nitrided steel sheet is obtained. Further, an annealing separating agent is applied on the surface of the decarburized nitrided steel sheet and finish annealing is performed, and thereby a glass coating film is formed. The N content of the decarburized nitrided steel sheet is set to 0.0150 mass% to 0.0250 mass% and the relationship of 2 × [Te] + [N] ‰¦ 0.0300 mass% is set to be established. Note that [Te] represents the Te content and [N] represents the N content.