INVESTIGATION OF THE TECHNICAL FEASIBILITY OF COLD EXTRUSION FOR ZIRCALOY-2 TUBING PRODUCTION. Quarterly Technical Progress Report No. 3, April-June 1961

Technical Report · Tue Oct 30 23:00:00 EST 1962

DOI:https://doi.org/10.2172/4840197· OSTI ID:4840197

Weil, F E; Hill, J G

Investigations are being made to establish the feasibility of using cold extrusion to produce Zircaloy-2 tubular products. Tests on extruding 1 1/4-in. diameter billets were completed. Samples in 46 bar-extrusion tests were extruded with 80% reduction at 400 deg C. Severe lubricant breakdown occurred. Piercing tests were conducted at, room temperature and 200 deg C, using 50% reduction and a 140-degree conical punch profile. Good extrusions were obtained in forraing 1.07-in. OD x 0.052-in. wall tubes with 65% reduction. Low efficiencies in tube- extrusion tests compared with those for bar extrusion were due to the large surface-to-volume ratio of tubular specimens. Tooling was designed and fabricated to produce, in three steps, 12-in. lengths of 0.560-in. OD x 0.030- in. wall tubing from

• Research Organization: Advanced Technology Labs. Div. of American-Standard, Mountain View, Calif.
• NSA Number: NSA-16-019299
• OSTI ID: 4840197
• Report Number(s): ATL-A-120; EURAEC-139
• Country of Publication: United States
• Language: English

Related Subjects

COLD WORKING
CONFIGURATION
EFFICIENCY
EXTRUSION
FAILURES
LUBRICATION
METALS, CERAMICS, AND OTHER MATERIALS
RODS
TEMPERATURE
TESTING
THICKNESS
TOOLS
TUBES
ZIRCALOY