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    AIRFLOW CONTROL FOR ADDITIVE MANUFACTURING
    11.
    发明申请
    AIRFLOW CONTROL FOR ADDITIVE MANUFACTURING 有权

    公开(公告)号：US20210362416A1

    公开(公告)日：2021-11-25

    申请号：US17397356

    申请日：2021-08-09

    Applicant: General Electric Company

    Inventor： Andrew Martin ,  Justin Mamrak

    IPC: B29C64/241 ,  B29C64/153 ,  B29C64/268 ,  B29C64/188 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/245 ,  B29C64/371 ,  G05B19/4099 ,  B22F12/00

    Abstract: A method, apparatus, and program for additive manufacturing. The additive manufacturing device includes a positioning mechanism configured to provide independent movement of at least one build unit in at least two dimensions. The build unit may further include a gasflow device for providing a flow zone along a first direction with relation to the build unit. The build unit may further include a powder delivery mechanism and an irradiation beam directing unit. The irradiation bean unit may follow a first irradiation path, wherein the first irradiation path forms at least a first solidification line and at least a second solidification line formed at an angle other than 0° and 180° with respect to the first solidification line. During the formation of the first solidification line, the build unit may be positioned in a first orientation such that the first direction of the flow zone is substantially perpendicular to the first solidification line. During the formation of the second solidification line, the build unit may be positioned in a second orientation such that the flow zone along the first direction is substantially perpendicular to the second solidification line.

    SCAN FIELD VARIATION FOR ADDITIVE MANUFACTURING
    12.
    发明申请
    SCAN FIELD VARIATION FOR ADDITIVE MANUFACTURING 有权

    公开(公告)号：US20210178480A1

    公开(公告)日：2021-06-17

    申请号：US16761644

    申请日：2018-11-02

    Applicant: General Electric Company

    Inventor： Justin Mamrak ,  MacKenzie Ryan Redding ,  Thomas Graham Spears

    IPC: B22F10/366 ,  B29C64/165 ,  B29C64/268 ,  B29C64/393 ,  B22F10/14 ,  B22F12/41 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y30/00

    Abstract: A method, apparatus, and program for additive manufacturing. The additive manufacturing method may include solidifying at least a portion of a first layer (601) of build material (416) within a first scan region (902A). At least one of a build unit (400) and a build platform (310) may be moved to solidify at least a portion of the first layer (601) of build material (416) within a second scan region (902B). A second layer (602) of build material (416) may be provided over at least a portion of the first scan region (902A) and the second scan region (902B). A second layer (602) of build material (416) may be solidified within at least a portion of the third scan region (902C), the third scan region (902C) may at least partially overlap and may be offset with relation to the first scan region (902A).

    Triangle hatch pattern for additive manufacturing
    13.
    发明授权
    Triangle hatch pattern for additive manufacturing 有权

    公开(公告)号：US10828700B2

    公开(公告)日：2020-11-10

    申请号：US15451108

    申请日：2017-03-06

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Justin Mamrak ,  MacKenzie Ryan Redding

    IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: A scanning technique for the additive manufacturing of an object. The method comprises the irradiation of a portion of a given layer of powder to form a fused region using an energy source. When forming an object layer by layer, the irradiation follows a first irradiation path bounded by a first stripe, wherein the first irradiation path is formed at an oblique angle with respect to the first stripe. The first irradiation path further comprises at least a first scan vector and a second scan vector at least partially melting a powder and forming a first solidification line and second solidification line respectively, wherein the first solidification intersects and forms an oblique angle with respect to the second solidification line. After a layer is completed, a subsequent layer of powder is provided over the completed layer, and the subsequent layer of powder is irradiated. Irradiation of the subsequent layer of powder follows a second irradiation path bounded by a second stripe. wherein the second irradiation path is formed at an oblique angle with respect to the second stripe. The first irradiation path further comprises at least a third scan vector and a fourth scan vector at least partially melting a powder and forming a third solidification line and fourth solidification line respectively, wherein the third solidification intersects and forms an oblique angle with respect to the fourth solidification line.

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