Fabrication procedure for a cross-bracing grid for a fuel assembly of a nuclear reaction
US4918710A · kind A · utility
14Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Aug 24, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Aug 24, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A zirconium alloy sheet containing 2 to 3% of niobium is cooled at a controlled and moderate rate to the .alpha.+.beta. state. Plates (2, 2') are cut from the cooled sheet and cold-formed. The grid (1) is assembled from the plates (2, 2') which are welded together and the completed grid is then returned to the .alpha. phase by heating at a temperature of between 400.degree. and 550.degree. C. for a period of ten to thirty hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.