NDLI: Friction stir welding of gr-cop 84 for combustion chamber liners

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Friction stir welding of gr-cop 84 for combustion chamber liners

Content Provider	NASA Technical Reports Server (NTRS)
Author	Russell, Carolyn K. Carter, Robert Goudy, Richard Ellis, David L.
Copyright Year	2004
Description	GRCop-84 is a copper-chromium-niobium alloy developed by the Glenn Research Center for liquid rocket engine combustion chamber liners. GRCop-84 exhibits superior properties over conventional copper-base alloys in a liquid hydrogen-oxygen operating environment. The Next Generation Launch Technology program has funded a program to demonstrate scale-up production capabilities of GR-Cop 84 to levels suitable for main combustion chamber production for the prototype rocket engine. This paper describes a novel method of manufacturing the main combustion chamber liner. The process consists of several steps: extrude the GR-Cop 84 powder into billets, roll the billets into plates, bump form the plates into cylinder halves and friction stir weld the halves into a cylinder. The cylinder is then metal spun formed to near net liner dimensions followed by finish machining to the final configuration. This paper describes the friction stir weld process development including tooling and non-destructive inspection techniques, culminating in the successful production of a liner preform completed through spin forming.
File Size	14656057
Page Count	9
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040071041
Archival Resource Key	ark:/13960/t6qz76c6k
Language	English
Publisher Date	2004-01-01
Access Restriction	Open
Subject Keyword	Mechanical Engineering Preforms Machining Linings Inspection Niobium Alloys Powder Particles Chromium Alloys Tooling Friction Stir Welding Launching Manufacturing Roll Liquid Propellant Rocket Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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