Reinforced ceramic dies for superplastic forming operations
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Ceramic dies have been developed to meet the need for a dimensionally stable tool, which can withstand the temperatures (425 to 950 °C) and high forming pressures (up to 7 MPa) that are required for superplastic forming (SPF), superplastic forming with diffusion bonding (SPF/DB), and hot sizing of metal parts. With the improvements that have been made to strengthen fused silica based ceramics, the performance of ceramic tools is slowly closing in on meeting the same forming complexity as corrosion-resistant steel (CRES) dies can achieve. Boeing has successfully superplastically formed jet engine wide chord fan blades using ceramic dies, and many production aircraft parts are being built with Boeing’s patented ceramic die technology.
Keywordsaerospace automotive ceramic ceramic tooling die forming diffusion bonding hot forming manufacturing technology rapid prototyping rebar reinforcement superplastic forming SPF SPF/DB
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- 1.G. Cadwell, Advances in Production Technology for SPF of Titanium, Effective Applications of SPF and DB for the Engineering Specialist, Society of Manufacturing Engineers, 1988, Sec. 4Google Scholar
- 2.G. Cadwell, U.S. Patent No. 4,984,348, 1991; 5,016,805, 1991; 5,209,093, 1993; 5,214,949, 1993Google Scholar
- 3.R.V. Curtis, A.S. Juszczyk, and J.D. Walter, Superplastic Forming of Ti-6Al-4V with Applications in Dentistry, Superplasticity and Superplastic Forming 1998, TMS, 1999, p 287Google Scholar
- 4.A. Jocelyn, T. Flower, and D. Nash, Generic Ceramic Tooling for the SPF/DB Process, ICSAM 2000, Trans Tech Publications, 2001, p 23Google Scholar
- 5.B. Ginty, et al., U.S. Patent No. 4,901,552, 1990Google Scholar
- 6.D. Sanders, U.S. Patent No. 5,467,626, 1995; 5,661,992, 1997Google Scholar
- 7.D. Sanders and B. Cox, U.S. Patent No. 6,235,381 B1, 2001Google Scholar
- 8.D. Sanders, et al., U.S. Patent No. 6,692,844, 2004Google Scholar
- 9.D. Sanders, Aerospace Manufacturing Challenges for Superplastic Forming in the Twenty-First Century, Society of Engineering Science, 1998, p 152Google Scholar