Process and apparatus for hot shaping of metals or metal alloys
US5054184A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Jan 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49989
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The process and apparatus concern hot shaping by plastic deformation of metal alloys by means of a pressing tool. The process comprises effecting extrusion of a billet which is covered by at least one external sleeve, by a pushing force applied by means of a pressing tool, through a die. A thin layer of at least one compound comprising oxygen and at least one metal is deposited on one of the facing walls of the sleeve and the billet. The billet is preheated before being put into the container for the extrusion operation. Lubrication is effected by a lubricant such as a glass. The process is applied to the extrusion of solid or hollow billets of refractory alloys and also other alloys which involve difficulties in shaping them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.