Rotary Swaging of Precision Barrels

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 inch/foot was obtained in a nearly stress-free swaged product.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
ADA008987

Entities

People

  • A. L. Hoffmanner
  • K. R. Iyer

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Assembly
  • Back Pressure
  • Fabrication
  • Feed Mechanisms
  • Geometry
  • Heat Treatment
  • Load Cells
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Working
  • Precision
  • Production
  • Regression Analysis
  • Residual Stress
  • Strain Gages

Readers

  • Metallurgy
  • ballistics.