Grain-oriented electrical steel sheet and method of manufacturing the same
US8657968B2 · kind B2 · utility
1Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2011 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Sep 9, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2201/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This method of manufacturing a grain-oriented electrical steel sheet includes, between a cold rolling process and a winding process, a groove formation process of irradiating the surface of a silicon steel sheet with a laser beam multiple times at predetermined intervals in a sheet passing direction, over an area from one end edge to the other end edge, in a sheet width direction of the silicon steel sheet, thereby forming a groove along a locus of the laser beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.