INVESTIGATION OF THE TECHNICAL FEASIBILITY OF COLD EXTRUSION FOR ZIRCALOY-2 TUBING PRODUCTION. Technical Progress Report
The feasibility of cold extrusion for Zircaloy-2 tube production was studied and the basic feasibility of cold extruding Zircaloy-2 was indicated. Lubrication systems, composed of a lubricant and a conversion coating, were developed and evaluated for the current application. A fluoride-phosphate base coating and a number of promising lubricants were selected for actual extrusion tests. Bars of Zircaloy-2 were successfully cold-extruded to reductions of 50, 65, and 80%. The best lubricants provided excellent surface finish, and no evidence of cracks or other defects could be found in the specimens. Annealed extraded specimens exhibited the same tensile properties as annealed raw stock. Deformation efficiency was found to be in the same range as for cold-extruded aluminum, titanium, and steel. Cold extrusion of Zircaloy-2 heavywalled tube shells was also found to be economic if sufficient production volume exists. (P.C.H.)
- Research Organization:
- Advanced Technology Labs. Div. of American-Standard, Mountain View,Calif.
- NSA Number:
- NSA-18-004209
- OSTI ID:
- 4133856
- Report Number(s):
- ATL-423; EURAEC-92
- Country of Publication:
- United States
- Language:
- English
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