Welding plates for a fuel rod grid
US4492844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1982 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Sep 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Welding plates for laser beam welding of a fuel rod grid are provided, each welding plate having a surface with a set of equally spaced, parallel grooves and with a second set of such grooves perpendicular to the first set. Each of the welding plates is provided with openings therethrough at the points of intersection of the straps forming the grid, so as to expose those points of intersection to a laser beam for laser beam welding of the points of intersection. A vane side welding plate has the walls of the laser beam access openings placed so as to hold vanes extending from the straps in deflected position. Stand-off pins and clamping bolts are provided, the latter having heads with access openings for the laser beam. The welding plates are provided with protrusions which extend laterally thereof, the protrusions having precisely located holes with precision bushings therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.