RU-2026111625-A - ELECTRICAL STEEL SHEET WITH ORIENTED GRAIN STRUCTURE AND A METHOD FOR ITS MANUFACTURING

Inventors

• МАЦУБАРА Рио
• КАВАМУРА Юсуке
• Хонма Рей
• СУДЗУМА Тосиюки

Assignees

• НИППОН СТИЛ КОРПОРЕЙШН

Dates

Publication Date

20260505

Application Date

20240927

Priority Date

20230927

Claims (20)

1. 1. A sheet of grain-oriented electrical steel containing:
2. a plurality of processing lines for controlling magnetic domains running in a direction intersecting the rolling direction on the surface,
3. in this case:
4. in the case where a square evaluation area having a side length of 50 mm and a side parallel to the rolling direction is specified on the surface, and in addition, imaginary lines parallel to the rolling direction and having a length of 50 mm are specified in the evaluation area at intervals of 5 mm in the direction perpendicular to the rolling direction, and
5. on at least one of the imaginary lines, of the plurality of intersection points of the imaginary line and the plurality of processing lines for controlling magnetic domains, the absolute maximum value of the interval between adjacent intersection points in the rolling direction is more than 20 mm, and the average value of the distances between the magnetic domain walls measured along the imaginary line is 600 μm or less.
6. 2. A sheet of electrical steel with an oriented grain structure according to paragraph 1, in which:
7. the average value of the distances between magnetic domain walls, measured along the imaginary line, is 500 µm or less.
8. 3. A sheet of electrical steel with an oriented grain structure according to paragraph 1, in which:
9. the average value of the distances between magnetic domain walls measured along an imaginary line is 600 µm or less on each of two or more imaginary lines for which the absolute maximum value of said intervals in the rolling direction is more than 20 mm.
10. 4. A sheet of electrical steel with an oriented grain structure according to paragraph 3, in which:
11. the average value of the distances between magnetic domain walls measured along an imaginary line is 500 µm or less on each of two or more imaginary lines for which the absolute maximum value of said intervals in the rolling direction is more than 20 mm.
12. 5. A sheet of electrical steel with an oriented grain structure according to paragraph 1, in which:
13. the absolute maximum value of the said interval in the rolling direction is more than 30 mm.
14. 6. A sheet of electrical steel with an oriented grain structure, containing:
15. a plurality of processing lines for controlling magnetic domains running in a direction intersecting the rolling direction on the surface,
16. in this case:
17. in the case where a square evaluation area having a side length of 50 mm and a side parallel to the rolling direction is specified on the surface, and in addition, imaginary lines parallel to the rolling direction and having a length of 50 mm are specified in the evaluation area at intervals of 5 mm in the direction perpendicular to the rolling direction,
18. on at least one of the imaginary lines, of the plurality of intersection points of the imaginary line and the plurality of processing lines for controlling magnetic domains, the absolute maximum value of the interval between adjacent intersection points in the rolling direction is more than 20 mm, and the absolute maximum value of the distance between the magnetic domain walls, measured along the imaginary line, is 1200 μm or less.
19. 7. A sheet of electrical steel with an oriented grain structure according to paragraph 6, in which:
20. the absolute maximum value of the distances between magnetic domain walls, measured along the imaginary line, is 800 µm or less.