Method for fabricating non-planar magnet
US10460871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2016 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Dec 15, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D35/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for fabricating a non-planar magnet includes extruding a precursor material including neodymium iron boron crystalline grains into an original anisotropic neodymium iron boron permanent magnet having an original shape, wherein the original anisotropic neodymium iron boron permanent magnet has at least about 90 percent neodymium iron boron magnetic material by volume. The original anisotropic neodymium iron boron permanent magnet is heated to a deformation temperature. The original anisotropic neodymium iron boron permanent magnet is deformed into a reshaped anisotropic neodymium iron boron permanent magnet having a second shape substantially different from the original shape using heated tooling to apply a deformation load to the original anisotropic neodymium iron boron permanent magnet. The original anisotropic neodymium iron boron permanent magnet and the reshaped anisotropic neodymium iron boron permanent magnet each have respective magnetic moments substantially aligned with a respective local surface normal corresponding to the respective magnetic moment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.