Method for making a composite metal part having inner reinforcements in the form of fibers, blank for implementing same and metal part thus obtained
US8776343B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 24, 2010 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Dec 30, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49801
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
During implementing a composite metal part by compaction of an insert having reinforcing fibers in a metal body or container, gas used for compaction may enter the cavity formed in the container for receiving the insert between a lid covering the insert and the container, which can prevent or degrade compaction and diffusion welding of fiber sheaths of the insert therebetween and/or with walls of the cavity. To solve this problem, the present method includes initiating isostatic compaction by a phase including raising and maintaining temperature, followed by a phase including hot-feeding pressurized gas, and machining an assembly to obtain the part. The temperature raising phase includes a diffusion pre-welding of material rigidly connecting the pressure-adjusted walls of the lid and the container. The method can be used for designing parts having a tensile and compression resistance, such as parts for aircraft landing gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.