NEW DEVELOPMENTS IN WELDED FABRICATION OF LARGE SOLID-FUEL ROCKET-MOTOR CASES

Abstract

The predominant welding processes used in fabricating motor cases are inert-gas-shielded welding and resistance-seam welding. Three significant conclusions have been drawn relating to welded fabrication of motor cases: (1) Welding is not currently a limiting factor on the strength levels obtainable in production cases. These cases are being made of high-strength steels heat treated to strength levels between 190,000 and 210,000 uniaxial yield strength. (2) Welding could be used in motor cases in the near future at the following uniaxial-yield-strength levels: 170,000 psi - Ti alloys; 240,000- 250,000 psi low-alloy and hot-work die steels; and 280,000300,000 psi - Coldworked stainless steel or MarAging steels. (3) Welding may be used in motor cases in 2 to 4 years at the following uniaxialyield-strength levels: 200,000 psi - Titanium alloys; 260,000- 300,000 psi - Low-alloy and hotwork die steels; and 340,000 psi - Coldworked stainless steel or Mar-Aging steels. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 06, 1962
Accession Number
AD0284829

Entities

People

  • D. C. Martin
  • M. D. Randall
  • R. E. Monroe

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Construction
  • Fabrication
  • Ferrium
  • Heat Treatment
  • Joints
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Mechanical Working
  • Quality Control
  • Refractory Metals
  • Sheet Metal
  • Tensile Properties
  • Tensile Strength
  • Welding
  • Welds

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy
  • Rocket Propulsion.