US 12,138,720 B2
Article and method of making an article by chemical vapor infiltration
Robert A. White, III, Meriden, CT (US); David A. Litton, West Hartford, CT (US); and Timothy J. Harding, Wethersfield, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed on Dec. 13, 2022, as Appl. No. 18/080,468.
Prior Publication US 2024/0189951 A1, Jun. 13, 2024
Int. Cl. B23P 6/00 (2006.01); C04B 35/80 (2006.01); C04B 41/45 (2006.01); C04B 41/50 (2006.01); C04B 41/87 (2006.01); F02C 7/00 (2006.01)
CPC B23P 6/00 (2013.01) [C04B 35/80 (2013.01); C04B 41/4531 (2013.01); C04B 41/5032 (2013.01); C04B 41/5042 (2013.01); C04B 41/87 (2013.01); C04B 2235/612 (2013.01); F02C 7/00 (2013.01); F05D 2230/80 (2013.01); F05D 2300/6033 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of repairing a nonconforming article, comprising:
applying a machinable coating to an article with a nonconformance, the article including a preform at least partially infiltrated with a matrix material, to form a repaired article;
machining the machinable coating;
completing infiltration of the repaired article with the matrix material;
wherein the nonconformance is that the article is smaller in a respect than a desired geometry of the article; and
wherein the applying includes applying the machinable coating to a geometry that is larger than the desired geometry in the respect.