Method of manufacturing metal pieces by casting and sintering of a metal alloy powder
US4435360A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 1982 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | Mar 1, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F3/1258
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of manufacturing metal pieces by casting and sintering of a metal alloy powder of the type that includes two phases, a conforming phase during which a load of powder is heated inside a formal casting to execute a rigid preform which is porous and a compacting and sintering phase during which the preform is heated under isostatic pressure. The method and resulting metal piece is characterized in that the conforming phase is conducted so that the preform has open pores and the isostatic pressure is applied by way of an envelope that distorts and is airtight. The method is applied advantageously in the execution of complex formal pieces made of superalloys or made of a titanium alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.