Grain-oriented electrical steel sheet
US10385418B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Aug 9, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2202/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a grain-oriented electrical steel sheet including a steel sheet having a steel sheet surface in which a groove, which extends in a direction intersecting a rolling direction and of which a groove depth direction matches a sheet thickness direction, is formed. In a case where the groove is seen on a longitudinal groove cross-section including a groove extension direction and the sheet thickness direction, an arithmetic average height Ra of a roughness curve, which constitutes a contour of a groove bottom region of the groove, is 1 μm to 3 μm, and an average length RSm of a roughness curve element, which constitutes the contour of the groove bottom region, is 10 μm to 150 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.