Method and apparatus for manufacturing tubes by rolling
US6920773B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2045/006
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a tube made of a non-ferrous material, particularly a tube made of mainly copper, by rolling, in which method, in the first working step the tube billet is worked by rolling with conical rolls, so that mainly owing to the deformation resistance, the temperature of the billet under operation rises up to the recrystallization range, at least on the spot that is being worked. Essentially immediately after the first working step, the tube billet is subjected to at least one second working step with a second set of conical rolls, in which case the tube billet is maintained, at least during the first working step and at least a second working step in non-oxidizing conditions. The invention also relates to an apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.