Method for producing oriented electrical steel sheet with ultra-low iron loss
US11773490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2018 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Jan 18, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1272
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is a method for producing an oriented electrical steel sheet with an ultra-low iron loss.The method for producing an oriented electrical steel sheet according to the present disclosure is a method for producing an oriented electrical steel sheet comprising the processes of performing reheating, hot rolling, hot-rolled sheet annealing, cold rolling, primary recrystallization annealing and secondary recrystallization annealing on a steel slab, whereby a ceramic coating layer is formed by subjecting a gas-phase ceramic precursor to a contact reaction in a plasma state using the atmospheric pressure plasma CVD (APP-CVD) process, on a part of or the entire one or both surfaces of a steel sheet which has been subjected to the primary recrystallization annealing, and then secondary recrystallization annealing is performed thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.