Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Surface finishing
Reexamination Certificate
2008-04-01
2008-04-01
Johnson, Christina (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Surface finishing
C264S163000, C264S255000, C264S313000, C264S317000, C264S610000, C264S632000, C264S635000, C264S642000, C264S678000, C264SDIG044
Reexamination Certificate
active
10767012
ABSTRACT:
A method of manufacturing a hybrid structure (100) having a layer of CMC material (28) defining an interior passageway (24) and a layer of ceramic insulating material (18) lining the passageway. The method includes the step of casting the insulating material to a first thickness required for effective casting but in excess of a desired second thickness for use of the hybrid structure. An inner mold (14) defining a net shape desired for the passageway remains in place after the casting step to mechanically support the insulating material during a machining process used to reduce the thickness of the insulating material from the as-cast first thickness to the desired second thickness. The inner mold also provides support as the CMC material is deposited onto the insulating material. The inner mold may include a fugitive material portion (20) to facilitate its removal after the CMC material is formed.
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Burke Michael A.
Merrill Gary B.
Morrison Jay A.
Vance Steven James
Johnson Christina
Siemens Power Generation, Inc.
Wollschlager Jeff
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