Patent · US Active

Magnet core and method for its production

US8372218B2 · kind B2 · utility

1Cited by

48References

33Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Dieter Nuetzel · Großkrotzenburg, DE
Markus Brunner · Bessenbach, DE

Key dates

Filing date	Jun 19, 2007
Grant date	Feb 12, 2013
Priority date	—
Expiry date	Aug 2, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49076
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Magnet cores pressed using a powder of nanocrystalline or amorphous particles and a pressing additive should be characterized by minimal iron losses. These particles have first surfaces represented by the original strip surfaces and second surfaces represented by surfaces produced in a pulverization process, the overwhelming majority of these second particle surfaces being smooth cut or fracture surfaces without any plastic deformation, the proportion T of areas of plastic deformation of the second particle surfaces being 0≦T≦0.5.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.