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    Additive manufacturing method for functionally graded material
    31.
    发明授权
    Additive manufacturing method for functionally graded material 有权

    公开(公告)号：US11628618B2

    公开(公告)日：2023-04-18

    申请号：US17375497

    申请日：2021-07-14

    Applicant: General Electric Company

    Inventor： Meredith Elissa Dubelman ,  Xi Yang ,  Mary Kathryn Thompson

    IPC: B29C64/165 ,  B29C64/245 ,  B29C64/35 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

    Abstract: A method for producing a functionally graded component layer-by-layer includes: depositing radiant-energy-curable resin on a build surface defined by a resin support, the resin containing filler including at least two groups of particles with different physical properties; allowing the filler to settle such that the groups of particles separate from each other, defining at least two regions within the resin; positioning a stage relative to the build surface so as to define a layer increment in the resin; selectively curing the resin using an radiant energy applied in a specific pattern so as to define the geometry of a cross-sectional layer of the component; moving the build surface and the stage relatively apart so as to separate the component from the build surface; repeating at least the steps of positioning and selectively curing for a plurality of layers, until the component is complete.

    MULTI-MATERIAL ADDITIVE MANUFACTURING APPARATUS AND METHOD
    32.
    发明申请
    MULTI-MATERIAL ADDITIVE MANUFACTURING APPARATUS AND METHOD 有权

    公开(公告)号：US20230039012A1

    公开(公告)日：2023-02-09

    申请号：US17973092

    申请日：2022-10-25

    Applicant: General Electric Company

    Inventor： Meredith Elissa Dubelman ,  Christopher Barnhill ,  Xi Yang ,  Mary Kathryn Thompson

    IPC: B29C64/129 ,  B29C64/245 ,  B29C64/35 ,  B29C64/264 ,  B29C64/241

    Abstract: A method for producing a component layer-by-layer includes: providing two or more resin handling assemblies, each including a resin support which has at least a portion which is transparent, each resin support defining a build surface located in a build zone of the respective assembly; executing a build cycle, including: depositing on each build surface radiant-energy-curable resin, the resin on each build surface being a unique material combination; positioning a stage relative to one of the build surfaces to define a layer increment; selectively curing the resin using applied radiant energy so as to define a cross-sectional layer of the component; separating the component from the build surface; cleaning at least one of the component and the stage; and repeating the cycle, for a plurality of layers, wherein at least one of the layers is cured in each of the build zone. Apparatus is described for carrying out the method.

    METHODS FOR CASTING A COMPONENT VIA A UNITARY CORE-SHELL MOLD
    35.
    发明申请
    METHODS FOR CASTING A COMPONENT VIA A UNITARY CORE-SHELL MOLD 有权

    公开(公告)号：US20220362965A1

    公开(公告)日：2022-11-17

    申请号：US17317151

    申请日：2021-05-11

    Applicant: General Electric Company

    Inventor： Gregory Terrence Garay ,  Brian David Przeslawski ,  Xi Yang ,  Joseph Edward Hampshire

    IPC: B28B1/00 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y50/02 ,  B33Y80/00 ,  B28B11/24 ,  B28B17/00 ,  B22C9/06

    Abstract: A method is provided for casting a component. Accordingly, data indicative of at least one location of a unitary core-shell mold which is susceptible to a stress concentration is received. An additive manufacturing process is employed to form the unitary core-shell mold defining a casting cavity. The unitary core-shell mold includes a shell wall defining an outer component shape and a core wall positioned inward of the shell wall. The core wall defines an inner component shape. The core wall and/or the shell wall defines at least one reinforcement recess adjacent to the at least one location which is susceptible to the stress concentration. Following the forming of the unitary core-shell mold, at least one support member is positioned within the reinforcement recess in contact with the at least one location. With the support member in place, the component is cast within the casting cavity.

    Method and apparatus for build thickness control in additive manufacturing
    36.
    发明授权
    Method and apparatus for build thickness control in additive manufacturing 有权

    公开(公告)号：US11498283B2

    公开(公告)日：2022-11-15

    申请号：US16280390

    申请日：2019-02-20

    Applicant: General Electric Company

    Inventor： Meredith Elissa Dubelman ,  Mary Kathryn Thompson ,  Christopher Barnhill ,  Xi Yang

    IPC: B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/106

    Abstract: A method for forming a part layer by layer using an additive manufacturing apparatus. The additive manufacturing apparatus includes a resin support, a stage, a measuring system, and an actuator configured to change the relative position of the stage and the resin support. The method includes the steps of: performing an additive manufacturing cycle including the following steps: depositing an uncured layer of resin; moving the stage to a target location; curing the uncured layer of resin; and moving the stage away from the target location; repeating the additive manufacturing cycle; performing a measuring process wherein the measuring process includes the following steps: using the measuring system to take a measurement indicative of an actual position of a structure; comparing the actual position of the structure to an expected position of the structure to determine an error; and using the error to modify the target location.

    BINDER SOLUTIONS COMPRISING A FUGITIVE METAL PRECURSOR FOR USE IN ADDITIVE MANUFACTURING
    39.
    发明申请
    BINDER SOLUTIONS COMPRISING A FUGITIVE METAL PRECURSOR FOR USE IN ADDITIVE MANUFACTURING 有权

    公开(公告)号：US20210370547A1

    公开(公告)日：2021-12-02

    申请号：US17325332

    申请日：2021-05-20

    Applicant: General Electric Company

    Inventor： Arunkumar Natarajan ,  Kwok Pong Chan ,  William C. Alberts ,  Xi Yang ,  Mary Kathryn Thompson

    IPC: B28B1/00 ,  C04B35/634 ,  B22F10/14 ,  C04B35/63 ,  B33Y70/00 ,  B33Y80/00 ,  B33Y10/00

    Abstract: A binder solution comprises a fugitive metal precursor, a thermoplastic binder, and a solvent. The fugitive metal precursor may comprise an alkaline earth metal, a transition metal, a post-transition metal, a metalloid, a rare earth metal, or combinations thereof. The fugitive metal precursor may comprise a salt such as carboxylate, nitrate, sulfate, carbonate, formate, chloride, halide, derivatives thereof, and combinations thereof. A method of manufacturing a part includes depositing a layer of particulate material on a working surface, selectively applying a binder solution into the layer of particulate material in a pattern representative of a layer of the part, repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder solution, and curing the applied binder solution in the plurality of layers of particulate material with the applied binder solution to evaporate the solvent and form a green body part.

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