Method of pilger rolling of tubes
US4203309A · kind A · utility
4Cited by
3References
5Claims
0Family size
Inventors
Key dates
| Filing date | Oct 20, 1977 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Oct 20, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B21/065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The method resides in feeding a billet in portions into pilger rolls to be worked therein on a mandrel. The billet being positively turned about the rolling axis both in one direction and in the opposite direction in the course of deformation thereof and in the off-contact time when the billet is not engaged by the rolls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.