Method of manufacturing a sintered powder body
US4339271A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1978 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Jun 28, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F3/1266
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A shaped body is formed by cold-pressing a powdered material into a desired shape and then providing thereon a surface layer of a material having a lower melting point than the powder of the shaped body. The shaped body is then placed in a furnace connectable to vacuum equipment, wherein the pressure is first lowered to a value lower than atmospheric pressure and then the temperature is increased so that the material of the surface layer melts. Thereafter the body is isostatically hot-pressed under the direct influence of an inert, gaseous pressure medium, the powder particles being thus bound together to high density by pressure sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.