Grain-oriented electrical steel sheet and method for manufacturing same
US10793929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2014 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Nov 15, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D10/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed are a grain-oriented electrical steel sheet and a method of manufacturing the same. The method for manufacturing a grain-orientated electrical steel sheet according to an exemplary embodiment of the present invention includes: providing an electrical steel sheet before forming primary recrystallization or after forming the primary recrystallization; and forming a groove in a surface of the electrical steel sheet by radiating laser and simultaneously spraying gas onto the electrical steel sheet, in which energy density Ed and a laser scanning speed Vs of the radiated laser satisfy the following conditions, 1.0 J/mm2≤Ed≤5.0 J/mm2,0.0518 mm/μsec≤Vs≤0.2 mm/μsec.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.