Accession Number:

ADA008987

Title:

Rotary Swaging of Precision Barrels

Descriptive Note:

Technical rept.

Corporate Author:

TRW INC CLEVELAND OH

Personal Author(s):

• Hoffmanner, A. L.
• Iyer, K. R.

Report Date:

1974-09-01

Pagination or Media Count:

106.0

Abstract:

The objective of this program was to optimize the relevant process variables and heat treatments for the fabrication of Cr-Mo-V,7.62mm,M21 rifle barrels by rotary swaging. This program was based on a statistical-experimental investigation of the relevant process variables and heat treatments to determine their effects on bore quality and dimensional precision. The results quantitatively defined the relations between process and tooling design parameters and product quality. Excellent bore quality with dimensional precision of a 0.0001 inch and straightness of 0.0005 inchfoot was obtained in a nearly stress-free swaged product.

Descriptors:

• *GUN BARRELS
• *RIFLES
• *SWAGING
• FABRICATION
• MACHINE SHOP PRACTICE
• MACHINE TOOLS
• MANDRELS
• RESIDUAL STRESS

Subject Categories:

• Manufacturing and Industrial Engineering and Control of Production Systems
• Machinery and Tools
• Guns

Distribution Statement:

APPROVED FOR PUBLIC RELEASE