Process for tightly closing a bore in a work piece made of ductile material
US6018976A · kind A · utility
6Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Oct 9, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K21/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The process is characterized by means of successively executed displacements of material of a work piece into the inner bore diameter at different points of the mouth of a bore. The displacement of the material is executed by means of a die that can be moved at least approximately in the direction of the bore axis. The process for tightly closing a bore can preferably be used with work pieces comprised of ductile material, in particular an aluminum wrought alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.