US 12,187,656 B2
Ceramic matrix composite tooling for chemical vapor infiltration process
Ying She, Rocky Hill, CT (US); Afshin Bazshushtari, Rolling Hills Estates, CT (US); Sergio Calabrese, Vista, CA (US); Douglas F. Long, Mission Viejo, CA (US); and Andrew Joseph Lazur, La Jolla, CA (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Sep. 30, 2022, as Appl. No. 17/957,628.
Prior Publication US 2024/0109816 A1, Apr. 4, 2024
Int. Cl. C04B 35/52 (2006.01); C04B 41/45 (2006.01)
CPC C04B 41/457 (2013.01) [C04B 41/4531 (2013.01); C04B 2235/614 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A tooling assembly suitable for use in infiltrating a fibrous preform, the tooling assembly comprising:
a plurality of perforated plates, each of the plurality of perforated plates formed from graphite and comprising:
an outer surface and an oppositely disposed inner surface defining a plate thickness therebetween; and
a plurality of tapered holes extending through the thickness;
wherein the tooling assembly is configured to enclose the fibrous preform such that the inner surface of each of the plurality of perforated plates faces the fibrous preform and to maintain a shape of the fibrous preform during a chemical vapor infiltration process;
wherein each hole of the plurality of tapered holes has a first diameter at the outer surface and a second diameter at the inner surface; and
wherein the first diameter is greater than the second diameter.