COLUMBIUM ' 'H' ' SECTION PROGRAM. PHASE I - EXTRUSION. PHASE II - DRAWING

COLUMBIUM ' 'H' ' SECTION PROGRAM. PHASE I - EXTRUSION. PHASE II - DRAWING

The development of the extrusion process for D-43 (Nb 10W-1Zr-0.1C) and Cb-752 (Nb-10W-2.5Zr) ''H'' sections continued. Efforts were concentrated on reduction of contamination and improvement of surface finish and dimensional control of extruded sections. Group II ''H&#...

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Bibliographische Detailangaben
1. Verfasser: Peterson,E V
Format: Report
Sprache:eng
Schlagworte:
CARBON ALLOYS
DIES
DRAWING(FORMING)
EXTRUSION
GLASS
GRAPHITE
LUBRICATION
MATERIAL FORMING
NIOBIUM ALLOY CB-752
NIOBIUM ALLOY D-43
SURFACE PROPERTIES
THICKNESS
ZIRCONIUM ALLOYS
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Zusammenfassung:The development of the extrusion process for D-43 (Nb 10W-1Zr-0.1C) and Cb-752 (Nb-10W-2.5Zr) ''H'' sections continued. Efforts were concentrated on reduction of contamination and improvement of surface finish and dimensional control of extruded sections. Group II ''H'' extrusions (0.125 to 0.060 in. section thickness) showed reduced contamination and improved straightness, but surfaces and uniformity of section thickness were unsatisfactory. Group I extrusions were drawn from section thickness of 0.188 in. at room temperature with reductions of 5% to 18% per pass. Total reductions up to 28% were made on short lengths without intermediate annealing. (Author)