Accession Number:

AD0258431

Title:

Manufacturing Development of Tungsten Alloys for Rocket Nozzles. Technique III. Vacuum Arc Skull Casting.

Descriptive Note:

Corporate Author:

WESTINGHOUSE ELECTRIC CORP BLAIRSVILLE PA

Personal Author(s):

Report Date:

1961-06-10

Pagination or Media Count:

1.0

Abstract:

The vacuum arc skull casting technique was evaluated as a method of producing W and W alloys for rocket nozzles. Bars of the 50 W- 50 Mo, 70 W-30 Mo, 90 W-10 Mo wt- alloys and pure W in the pressed and sintered condition were vacuum arc melted and skull cast into graphite molds in a vacuum melting facility. Destructive testing of resultant parts was conducted to determine the hardness, soundness, contamination and grain size of the castings. The first pure W skull castings ever produced were made. The ability to vacuum arc melt and cast 60- to 70- lb pure W castings was established. The vacuum arc skull casting of W-Mo alloy rocket nozzles in thin configurations may be achieved. The temperature of the W arc was calculated theoretically and confirmed in experimental melting to be in the order of 8,000 to 11,000 F. Author

Descriptors:

• *ROCKET NOZZLES
• *TUNGSTEN ALLOYS
• CASTING
• ELECTRIC ARCS
• GRAIN STRUCTURES(METALLURGY)
• GRAPHITE
• HARDNESS
• MANUFACTURING
• MELTING
• MOLDINGS
• MOLYBDENUM ALLOYS
• POWDER METALLURGY
• PROCESSING
• PRODUCTION
• PURIFICATION
• TUNGSTEN
• VACUUM FURNACES

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE