Accession Number:

AD0260973

Title:

THE DEVELOPMENT OF FABRICATING TECHNIQUES FOR PRODUCING HIGH PURITY RHENIUM STRIP 6 X 6' X 0.005 INCHES

Descriptive Note:

Corporate Author:

CHASE BRASS AND COPPER CO INC WATERBURY CONN

Personal Author(s):

Report Date:

1960-10-30

Pagination or Media Count:

1.0

Abstract:

A total of 7-12 lb of high purity Re powder, lot 210, was produced chemical analysis, screen analysis, and physical measurements are tabulated. Abb of powder were mechanically compacted at 25 tonsq in. The compacts were vacuum presintered at less than one micron pressure for 3 hr at 1200 C and then sintered by self resistance heating in H at 2700 to 2800 C. The fully sintered compac s were then heliarc welded to orm an electrode for electron beam melting into a 1.5-in.-diam ingot. The cast ingot had an average hardness of 317 VHN. The ingot was machined by grinding to remove surface cold shuts and then cut into 3 ecut 5 lb of powder were mechanically compacted at 25 tonsq in. The compacts were vacuum presintered at less than one micron pressure for 3 hr at 1200 C and then sintered by self resistance heating in H at 2700 to 2800 C. The fully sintered compac s were then heliarc welded to orm an electrode for electron beam melting into a 1.5-in.-diam ingot. The cast ingot had an average hardness of 317 VHN. The ingot was machined by grinding to remove surface cold shuts and then cut into 3 ections. Sample 1 was induction heated to 1600 to 1700 C and then forged flat in one heat to 12in. thickness, on a 2500lb steam hammer. The sample cracked so severely that further fabrication was not attempted. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE