Metal working – Method of mechanical manufacture – Impeller making
Reexamination Certificate
2006-06-15
2010-06-01
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Impeller making
C029S423000, C029S889700, C029S889710, C228S165000, C228S169000, C228S173200, C228S193000, C419S005000, C419S006000, C419S007000, C419S008000, C419S038000, C428S570000
Reexamination Certificate
active
07726023
ABSTRACT:
In order to create titanium components with a titanium composite insert, a method is provided whereby an initial pre form1has a groove2formed in it. An encapsulating member4is then provided about the groove2in order to create a cavity5which is filled with titanium alloy powder6. This titanium alloy powder6is densified and then accurately machined in order to create a groove insert form7which can accommodate a titanium composite material pre form insert8and further titanium alloy powder9such that through a high temperature isostatic pressing (HIP) process, the insert8is embedded. The original component form1can then be machined in order to create the final component elements such as aerofoils13.
REFERENCES:
patent: 2922721 (1960-01-01), Tarkan et al.
patent: 4568516 (1986-02-01), Adlerborn et al.
patent: 5470524 (1995-11-01), Krueger et al.
patent: 5562245 (1996-10-01), Berthelemy et al.
patent: 5946801 (1999-09-01), Twigg et al.
Bryant David P
Oliff & Berridg,e PLC
Rolls-Royce PLC
Taousakis Alexander P
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