Method of producing powder magnetic core and method of producing magnetic core powder
US9159489B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Jul 20, 2011 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2202/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention includes: powder preparation step of obtaining magnetic core powders by mixing, of magnetic powders with thermosetting resin powders in hot state; powder filling step of filling the obtained magnetic core powders into a die; a compaction step of compacting magnetic core powders; and compact heating step of heating, compacts to the elevated temperature state at which the thermosetting resin hardens after compaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.