Method of producing atomized powder and method of manufacturing magnetic core
US11097347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2018 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/33
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing an atomized powder includes: an atomizing step of forming magnetic alloy particles from a molten metal by an atomizing method, to obtain a slurry in which the magnetic alloy particles are dispersed in an aqueous dispersion medium; a slurry concentration step of causing magnetic separation means to separate the magnetic alloy particles from the slurry to form a concentrated slurry having the magnetic alloy particles of more than 80% by mass, the magnetic separation means using a rotary drum including a magnetic circuit part fixedly disposed at a position where at least a part of the magnetic circuit part is immersed in the slurry and an outer sleeve capable of rotating outside the magnetic circuit part; and a drying step of causing drying means using an air flow dryer to dry the concentrated slurry to form a magnetic alloy powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.