Non-oriented silicon steel and its manufacturing method
US10385414B2 · kind B2 · utility
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Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jul 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14791
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An unoriented silicon steel having high magnetic conductivity and low iron loss at a working magnetic density of 1.0-1.5 T and method for manufacturing same. By proper deoxidation control in a RH refining and high-temperature treatment for a short time in a normalizing step, the method can reduce the amount of inclusions in the silicon steel and improve grain shape, so as to improve the magnetic conductivity and iron loss of the unoriented silicon steel at a magnetic density of 1.0-1.5 T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.