SWAGING OF URANIUM DIOXIDE. Quarterly Progress Report No. 5, July 1, 1961 to September 30, 1961

Technical Report · Tue Oct 31 04:00:00 EST 1961

OSTI ID:4832393

The pre-compaction and cold swaging study of reactorlength rods were completed. An improvement in the precompaction apparatus efficiency was obtained and vibrated densities of over 86% theoretical were reached with fused UO/sub 2/. Cold swaged densities of 92 to 93% theoretical are obtainable with only 2 passes, a reduction of fuel area of less than 20%, and a relatively low tube elongation value (approx. 10%). The research will now be centered on the study of the uniformity and reproducibility of swaged bars. An investigation on the use of ceramic grade UO/sub 2/ powder for swaging-annealing experiments was initiated. The swaged UO/sub 2/ testing development is in progress. The experimental setup for thermal conductivity measurement was modified in order to perform runs at temperatures higher than 500 deg C. A study of the open porosity of swaged UO/sub 2/ was initiated by means of the pressurized Hg technique. Fragmentation of fused UO/sub 2/ during swaging is also being studied. (auth)

• Research Organization: FIAT. Sezione Energia Nucleaire, Turin
• NSA Number: NSA-16-018002
• OSTI ID: 4832393
• Report Number(s): EURAEC-193; FN-E-13
• Country of Publication: United States
• Language: English

Related Subjects

ANNEALING
COLD WORKING
COMPACTING
DEFORMATION
DENSITY
EXPANSION
EXTRUSION
FAILURES
FUEL ELEMENTS
IMPREGNATION
MEASURED VALUES
MERCURY
METALS, CERAMICS, AND OTHER MATERIALS
POROSITY
PRESSURE
RODS
SWAGING
TESTING
THERMAL CONDUCTIVITY
TUBES
URANIUM DIOXIDE
VIBRATIONS