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New Developments in Welded Fabrication of Large Solid-fuel Rocket-motor Cases

Milton Dudley RandallR. E. MonroeD. C. Martin

出版	Defense Metals Information Center, Battelle Memorial Institute, 1962
URL	http://books.google.com.hk/books?id=Y6GCNojPt3cC&hl=&source=gbs_api

註釋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).