Non-oriented electrical steel sheet and method for producing same
US12334237B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Nov 20, 2020 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jul 31, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/328
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A non-oriented electrical steel sheet according to one embodiment of the present invention includes a base metal steel sheet, and a composite coating film composed of a Zn-containing phosphate and an organic resin, the composite coating film being formed on a surface of the base metal steel sheet, wherein: a content of Zn in the composite coating film is 10 mg/m2 or more per side; and the product of an amount of oxygen in the base metal steel sheet and a sheet thickness of the base metal steel sheet is 50 ppm·mm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.