Low core loss grain-oriented electrical steel plate and method of manufacturing the same
US8034196B2 · kind B2 · utility
2Cited by
5References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Feb 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12389
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A grain-oriented electrical steel plate is characterized in that grooves having a width of 10 μm to 200 μm and a depth of 10 μm to 30 μm exist in at least one of a front surface and a rear surface of a steel plate at intervals of 1 mm to 10 mm, an angle between a direction in which the grooves extend and a rolling direction of the steel plate is 60 degrees to 120 degrees, and tensile stresses having a maximum value of 20 MPa to 300 MPa act in the rolling direction within ranges of 10 μm to 300 μm from side surfaces of the grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.