Accession Number:

AD0606243

Title:

HIGH TEMPERATURE EXTRUSION LUBRICANTS.

Descriptive Note:

Final rept. for 1 Jul 62-15 Jun 64,

Corporate Author:

TRW INC CLEVELAND OHIO

Personal Author(s):

Report Date:

1964-07-01

Pagination or Media Count:

232.0

Abstract:

Superior metalworking lubricants have been developed and have proven capability for broad temperature range utilization during extrusion of difficult round and tee sections of aerospace alloys. Numerous experimental lubricant materials were initially evaluated by three laboratory screening tests. First, a lubricity test was devised to measure the lubricating characteristics under conditions simulating those found in extrusion. Second, a reactivity test determined the relative degree of surface reaction between billet materials and candidate lubricants. Third, an insulation test measured comparative thermal insulation characteristics for all candidate lubricants which exhibited superior results in the lubricity test. More than 100 extrusion trials each were conducted with 4340 steel and molybdenum -0.5 titanium billets. Results from the extrusion trails have demonstrated that a mixture of magnesium metaborate and graphite in water promotes relatively low extrusion pressures and superior control of extrusion dimensions and surface finish. These results have further demonstrated that this new lubricant is equally applicable to extrusion of 4340 steel at 1800F and molybdenum -0.5 titanium alloy at 3500F. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE