Retort with loading window
    42.
    发明授权

    公开(公告)号:US11971216B1

    公开(公告)日:2024-04-30

    申请号:US17561152

    申请日:2021-12-23

    CPC classification number: F27B5/02 F27B5/12 F27D5/0006

    Abstract: In some examples, a multilevel retort assembly. The assembly includes a base defining a base perimeter; and a plurality of shells. Each shell has a diffuser plate support and a perimeter with a substantially similar shape as the base perimeter. The plurality of shells are stacked on each other, mechanically supported by the base, and surround an inner retort volume. The at least one shell of the plurality of shells defines a removable window. The assembly also includes a plurality of diffuser plates, each diffuser plate supported by a corresponding diffuser plate support of the plurality of diffuser plate supports.

    Slurry infiltration fixture
    43.
    发明授权

    公开(公告)号:US11912628B1

    公开(公告)日:2024-02-27

    申请号:US17646409

    申请日:2021-12-29

    CPC classification number: C04B35/62892 C04B35/80 C04B2235/616

    Abstract: In some examples, a slurry infiltration fixture. The infiltration fixture includes a fixture main body that includes a slurry introduction channel and a plurality of fixture walls defining a cavity configured to receive a porous component. The cavity includes a component volume and a reservoir volume. The plurality of fixture walls includes a shape configured to define a fixed offset between the porous component and the plurality of fixture walls and a fixed volume for slurry between the plurality of fixture walls and the porous component. The slurry introduction channel is configured introduce the slurry into the cavity through an opening proximate a bottom of the cavity.

    METHOD OF MACHINING HOLES AND CHAMFERS IN CERAMIC MATRIX COMPOSITES

    公开(公告)号:US20240024963A1

    公开(公告)日:2024-01-25

    申请号:US18354130

    申请日:2023-07-18

    Inventor: Chris Downie

    Abstract: A method of forming an aperture in a ceramic matrix composite material is provided. The method may comprise drilling a pilot hole into the ceramic matrix composite material and spiral machining the pilot hole to enlarge a diameter of the pilot hole, wherein the enlarged pilot hole is the aperture in the ceramic matrix composite material. The method may comprise spiral machining the pilot hole in a radial direction with a tool to enlarge a diameter of the pilot hole until the aperture in the ceramic matrix composite material is formed. The tool may have a first diameter in a section of the tool and a second diameter on either side of the section of the tool or on both sides of the section of the tool, wherein the second diameter is larger than the first diameter.

    Additively manufactured composite components

    公开(公告)号:US11559918B2

    公开(公告)日:2023-01-24

    申请号:US16156630

    申请日:2018-10-10

    Abstract: An example technique includes extruding, by a tow deposition device, on a tow-by-tow basis, respective impregnated tows of a plurality of respective impregnated tows to form a layer of material on a major surface of a substrate. Each respective impregnated tow includes at least one ceramic fiber and a curable resin coating the at least one ceramic fiber. The example technique includes curing the curable resin to form a cured composite component. An example system includes a tow deposition device, an energy source, and a computing device. The computing device is configured to control the tow deposition device to extrude, on a tow-by-tow basis, respective impregnated tows of a plurality of respective impregnated tows to form a layer of material, and is configured to control the energy source to cure the curable resin to form a cured composite component.

    Assembly for chemical vapor infiltration of a fiber preform and method of infiltrating a fiber preform

    公开(公告)号:US11472747B2

    公开(公告)日:2022-10-18

    申请号:US16596054

    申请日:2019-10-08

    Abstract: A method of infiltrating a fiber preform comprises positioning an assembly in a process chamber, where the assembly includes a tool comprising through-holes, a fiber preform constrained within the tool, and a sacrificial preform disposed between the fiber preform and the tool. The sacrificial preform is gas permeable. The process chamber is heated, and gaseous reactants are delivered into the process chamber during the heating. The gaseous reactants penetrate the through-holes of the tool and infiltrate the sacrificial preform and the fiber preform. Deposition of reaction products occurs on exposed surfaces of the fiber preform and the sacrificial preform, and a coating is formed thereon. In addition, the sacrificial preform accumulates excess coating material formed from increased reactions at short diffusion depths. Accordingly, the coating formed on the fiber preform exhibits a thickness variation of about 10% or less throughout a volume of the fiber preform.

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