Tool and method for manufacturing a composite-material part by means of a liquid process

A process for manufacturing a ceramic matrix composite part, the process comprising:

• placing a first fibrous preform in an injection chamber formed in a tool for manufacturing the ceramic matrix composite part by injecting a slurry, said tool comprising the injection chamber adapted to receive at least one fibrous preform to be densified, wherein:
• the injection chamber comprises a plurality of first injection ports which are formed in a first side of said injection chamber for injecting the slurry into the injection chamber, said first injection ports being distributed along the first side of the injection chamber;
• the injection chamber comprises a plurality of first drainage ports which are formed on the first side of said injection chamber for draining a liquid phase of the slurry from the injection chamber, said first drainage ports being distributed along the first side of the injection chamber;
• the tool comprises a first filtration element which is located on the first side of said injection chamber and which is located opposite the first drainage ports;
• and a mesh is arranged in the first injection ports, an interior lateral wall of each first injection port surrounds the mesh;
• injecting the slurry comprising ceramic particles suspended in the liquid phase into the first fibrous preform through a first side of said first fibrous preform through the plurality of first injection ports;
• draining the liquid phase of the slurry through the plurality of first drainage ports from the first side of the first fibrous preform through the first filtration element configured to retain the ceramic particles in the first fibrous preform.