Machine Gun Liner Bond Strength

Abstract

Bond strengths of two Stellite 21 liners in the M2 0.50-cal. machine gun have been measured. Both liners were obtained from machine-gun barrels that had been retired from service. Liner bond strength from one of the barrels was measured to be ~750 psi. The other liner fell out of the barrel during sectioning, and its bond strength was much lower. Simple calculations showed that a bond strength of 750 psi was compatible with a shrink-fit process. In this case, the bond strength was shown to be sufficient to resist the forces on the lands and grooves of the liner due to spin-up forces on the bullet.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2007
Accession Number
ADA472711

Entities

People

  • Jonathan S. Montgomery
  • William S. de Rosset

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Arm Bones
  • Explosive Welding
  • Explosives
  • Failure Mode And Effect Analysis
  • Gun Barrels
  • Guns
  • Machine Guns
  • Manufacturing
  • Materials
  • Military Research
  • Muzzle Velocity
  • Propellants
  • Refractory Metals
  • Shear Strength
  • Stresses
  • Tantalum
  • Tantalum Alloys

Fields of Study

  • Physics

Readers

  • Metallurgy
  • Surface Coatings Technology.
  • ballistics.