Adaptation of the Convex Draw Die to the Production of Aircraft Engine Rings.
Final rept. 15 Oct 69-30 May 72,
BATTELLE COLUMBUS DIV OH
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This Manufacturing Methods program was aimed at establishing the feasibility of using a convex draw die to fabricate jet engine rings to net dimensions. After a study of several design concepts, a ring forming machine was designed, built, and used in conjunction with a curved convex draw die in studies with rolled and welded T-shaped rings of 7075 aluminum alloy. The studies showed that a T-shaped ring could be drawn through the convex draw die to achieve close dimensional control and good surface finish on the fabricated ring. The results suggest that this new ring forming technique should be applicable to fabricating high-strength materials for actual engine ring applications and could reduce present fabrication and machining costs. Further investigations of this new technique for fabricating engine rings would be required to establish this method as a viable production process. Author
- Fabrication Metallurgy
- Jet and Gas Turbine Engines