Method of bending a thick metal tube, and apparatus for implementing the method
US4686844A · kind A · utility
0Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1986 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Apr 2, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D7/162
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for bending thick metal tubes is disclosed and is characterized in that thermal insulation is disposed inside the heated zone of the tube being bent, and that the thickness of said thermal insulation is great enough to considerably reduce the temperature gradient between the inside and outside surfaces of the tube in said heated zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.