Process for producing connected sintered articles
US5460776A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F5/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a method of producing connected sintered articles obtained by breaking a unitary preform. It is characterized in that: PA1 a) a preform is pressed from powdered metals while imprinting in it a superficial groove (3) located in a plane for the purpose of subsequent breakage, PA1 b) this preform is presintered in order to consolidate it mechanically, the preform however remaining brittle, PA1 c) it is optionally compacted by recompression, PA1 d) recesses for the members for the mechanical connection of the final parts are optionally machined in this preform, PA1 e) this preform is broken into at least two parts, PA1 f) final sintering is carried out, PA1 g) the articles are cooled. The invention is applicable in particular to the production of connecting rods and connecting rod covers or of annular articles with or without an undercut (broken in the axial plane).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.