Method for fabricating powdered metal cores
US6224798A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2000 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jul 31, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2503/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of curing a polymeric binder onto a powdered metal after such polymer has been coated on the powdered metal but before a part is therefrom molded, thereby forming a polymer matrix-powdered metal composite material. The polymer-coated powdered metal may be cured by retaining the polymer-coated powdered metal in a fluidized bed contained within a fluidized bath (e.g. a fluid bed coater/drier apparatus) even after the coating process has terminated. The temperature of the fluidized bath may then be raised, in turn raising the temperature of the fluidized bed, thereby curing the polymer onto the coated powdered metal in situ. By keeping the polymer-coated power metal in constant motion during the curing process, the polymer-coated powdered metal particles do not agglomerate nor otherwise adhere to other coated powdered metal particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.