Method for producing through extrusion an anisotropic magnet with high energy product
US6787083B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Mar 29, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49076
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing an anisotropic magnet with high energy product through extrusion and, more specifically, by placing a particle charge of a composition from the which magnet is to be produced in a noncircular container, heating the container and particle charge and extruding the container and particle charge through a noncircular extrusion die in such a manner that one of the cross-sectional axes or dimension of the container and particle charge is held substantially constant during the extrusion to compact the particle charge to substantially full density by mechanical deformation produced during the extrusion to achieve a magnet with anisotropic magnetic properties along the axes or dimension thereof and, more specifically, a high energy product along the transverse of the smallest cross-sectional dimension of the extruded magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.