Process and apparatus for electron beam welding grids for a nuclear fuel assembly
US4680443A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Mar 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The apparatus is for welding grids, particularly for a nuclear fuel assembly, constituted by two sets of strips at right angles and whose terminal portions are made fast to a belt. It comprises, in an enclosure with a controlled atmosphere provided with a lock, a double cross movement table bearing at least one orientation device and which is capable of bringing each surface and each side of the grid in its turn into an orientation perpendicular to the firing line of a radiation welding member and to move the frame in two directions perpendicular to the firing line, so as to bring each spot to be welded in its turn opposite the firing line. The orientation device and the table are provided with control motors and constitute an automation for presenting all the weld spots to be formed successively opposite the firing line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.