Method for consolidating precision shapes
US4104782A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1976 |
| Grant date | Aug 8, 1978 |
| Priority date | — |
| Expiry date | Jul 14, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49982
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for consolidating powder metal preforms and for thereby producing high performance metal shapes from powder particles. The powder particles are consolidated into a shaped porous preform, and a coating is then applied to the resulting preform. The coating is initially porous whereby the coated preform can be degasified by subjecting the preform to a vacuum, particularly at elevated temperatures. The coated preform is then heated under vacuum to a temperature such that the coating is densified to the extent that it becomes non-porous. The coated preform is then subjected to a hot isostatic pressing operation whereby formation of a high integrity, fully dense metal shape results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.