Press for hydrostatic extrusion of tubes and profiles
US4186582A · kind A · utility
2Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1978 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Jan 19, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C23/007
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The pressure medium used in the pressure chamber of a hydrostatic press is degassified in a degassing tank prior to delivery to the pressure chamber so as to improve the resistance of the pressure cylinder, or the liner inside of the pressure cylinder, to fatigue. The degassified pressure medium can be a mixture of recirculated pressure medium recovered after passage through the die extrusion hole and new pressure medium, such as castor oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.