| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of an oriented electromagnetic steel sheet having reduced inclined Cube orientation and good magnetic property by adding a recrystallization process by rolling in the oriented electromagnetic steel sheet where nitrogen is added to a steel sheet before a secondary recrystallization for purpose of forming silicon nitride.SOLUTION: A steel slab becoming a predetermined composition is hot rolled without reheating or after reheating, wound at a temperature of 650°C to 900°C to make a hot rolled sheet, applied to first cold rolling with rolling ratio of 35% or more, then rolled by at least one cold rolling to a final sheet thickness, and then a firing separation agent is applied after a nitriding treatment with a nitrogen increase amount of 50 mass.ppm to 1000 mass.ppm during the first recrystallization firing or after firing and secondary recrystallization firing is conducted. |
