Non-oriented magnetic steel sheet and method for producing the same
US9051622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2010 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12458
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A non-oriented magnetic steel sheet contains, by mass %, C: 0.005% or less; Si: 2% to 4%; Mn and V: totally 11% or less; and Al: 3% or less, with the balance being Fe and inevitable impurities, wherein a Mn concentration (mass %) and a V concentration (mass %) in a thickness direction satisfy the following formula. 0.1<(XsMn,V−XcMn,V)/tMn,V<100, where XsMn,V: a sum of the Mn concentration (mass %) and the V concentration (mass %) at a surface of the steel sheet, XcMn,V: a sum of the Mn concentration (mass %) and the V concentration (mass %) at a center of the steel sheet, and tMn,V: a depth (mm), from the surface of the steel sheet, of a position where the sum of the Mn concentration (mass %) and the V concentration (mass %) is equal to XcMn,V.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.