Laser beam welding cane, particularly for the sealing of tubes
US5252804A · kind A · utility
3Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 1992 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | May 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/702
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The welding cane is equipped with a welding head (1) comprising an optical fiber (5) which emits a laser beam focused by an optical device (9) onto a wall (10) to be welded where a weld puddle (12) is formed. The welding head (1) comprises a photoelectric cell (45) illuminated by the scattered light around the end of the optical fiber. The signal emitted by the photoelectric cell (45) depends on the integrity of the optical fiber (5) and on the energy utilized for welding. It is used in the welding of a sealing sleeve in a pressurized water nuclear reactor steam generator tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.