INVESTIGATION OF THE TECHNICAL FEASIBILITY OF COLD EXTRUSION FOR ZIRCALOY-2 TUBING PRODUCTION. Quarterly Technical Progress Report, January-March 1961
Lubrication systems composed of a lubricant and a con version coating were developed and evaluated for the cold extrusion of Zircaloy-2. A fluoride- phosphate base coating and several lubricants were selected for actual extrusion tests. Bars of Zircaloy-2 were successfully extruded at temperatures ranging from room temperature to 400 deg C using reductions of 50, 65, and 8O%. Excellent surface finish was obtained and no evidence of cracks or other defects could be found. Fully annealed, extruded specimens exhibited the same tensile properties as similarly treated raw bar stock. Preferred orientation was found to be the same as for hot-extruded tubing, and corrosion in 750 deg F, 1500psi steam was the same as for raw bar stock. Billets were pierced successfully using reductions of up to 8O% at 300 deg C. A 140-degree conical punch profile was found to provide the best surface and require the lowest pressure. Open-end tubes were successfully extruded with maximum reductions of 80% and final wall thickness down to 0.044 in. A preliminary analysis of the economic potential of this process for Zircaloy-2 tubing production showed that it is economic if sufficient production volume exists. (auth)
- Research Organization:
- Advanced Technology Labs. Div. of American-Standard, Mountain View, Calif.
- NSA Number:
- NSA-15-016008
- OSTI ID:
- 4033281
- Report Number(s):
- EURAEC-90; ATL-A-119
- Country of Publication:
- United States
- Language:
- English
Similar Records
INVESTIGATION OF THE TECHNICAL FEASIBILITY OF COLD EXTRUSION FOR ZIRCALOY-2 TUBING PRODUCTION. Quarterly Technical Progress Report No. 3, April-June 1961
INVESTIGATION OF THE TECHNICAL FEASIBILITY OF COLD EXTRUSION FOR ZIRCALOY-2 TUBING PRODUCTION. Quarterly Technical Progress Report, January-March 1961