Accession Number:

ADA019520

Title:

Improved Materials and Manufacturing Methods for Gun Barrels

Descriptive Note:

Final rept.

Corporate Author:

TRW INC CLEVELAND OH

Report Date:

1975-06-01

Pagination or Media Count:

136.0

Abstract:

A three-task effort was conducted to establish advanced fabrication procedures for 7.62mm gun barrels from materials more refractory in nature than the conventional Cr-Mo-V steels. Barrel configurations for the M134 and M219 weapon systems were selected for process evaluation in Task 1. The process evaluation was centered about precision rotary forging to develop the rifling and chamber to finish dimension because fabrication costs for conventional methods would be prohibitive when the more difficult to machine alloys are considered. Task 11 was concerned with an actual demonstration of the fabrication sequence employing the technology developed in the first task. High quality M134 forgings were prepared in H-11 and IN 903 materials while fully contoured M219 forgings were prepared from H-11 steel. The M134 barrel forgings were finish machined according to an economical routing developed on this program. The entire process sequence was mathematically modeled in Task 111 to determine specific costs and fabrication parameters for each element in the routing.

Subject Categories:

  • Guns

Distribution Statement:

APPROVED FOR PUBLIC RELEASE