公开(公告)号：US20210031266A1

公开(公告)日：2021-02-04

申请号：US17072163

申请日：2020-10-16

Applicant: General Electric Company

Inventor： MacKenzie Ryan Redding ,  Zachary David Fieldman ,  Justin Mamrak

IPC: B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B23K26/14 ,  B23K15/00 ,  B29C64/153 ,  B33Y40/00 ,  B29C64/371 ,  B23K26/08

Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

公开(公告)号：US10799953B2

公开(公告)日：2020-10-13

申请号：US15945082

申请日：2018-04-04

Applicant: General Electric Company

Inventor： MacKenzie Ryan Redding ,  Justin Mamrak ,  Zachary David Fieldman

IPC: B22F3/105 ,  B29C64/364 ,  B29C64/268 ,  B23K15/00 ,  B23K37/00 ,  B23K26/08 ,  B23K26/14 ,  B23K26/342 ,  B33Y50/02 ,  B33Y30/00 ,  B33Y10/00 ,  B29C64/153 ,  B23K26/082 ,  B29C64/40 ,  B23K26/142 ,  B29C64/205

Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

公开(公告)号：US10391753B2

公开(公告)日：2019-08-27

申请号：US15042010

申请日：2016-02-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Zachary David Fieldman ,  Daniel Joerger ,  Neal Dunham

IPC: B29C64/153 ,  B29C64/40 ,  B33Y10/00 ,  B22F3/105 ,  B33Y40/00

Abstract: The present disclosure generally relates to methods for additive manufacturing (AM) that utilize support structure in the process of building objects that may be removed by rotating the support structure to a second orientation before removal, as well as novel support structures to be used within these AM processes. The support structures are fabricated in a first orientation and then rotated to the second orientation. The support structures are removed by passing through an outlet of the object.

公开(公告)号：US10357828B2

公开(公告)日：2019-07-23

申请号：US15041991

申请日：2016-02-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Zachary David Fieldman ,  Thomas Sinnett ,  Daniel Joerger ,  Neal Dunham

IPC: B22F3/105 ,  B22F5/10 ,  B23K26/342 ,  B33Y10/00 ,  B33Y80/00 ,  B23K101/06

Abstract: The present disclosure generally relates to methods for additive manufacturing (AM) that utilize support leading edge structures in the process of building objects, as well as novel leading edge support structures to be used within these AM processes. The support structure is positioned adjacent the object between the object and a first side of the powder bed. The support structure has a shape that tapers outward in the direction from the first side to the object.

公开(公告)号：US10022794B1

公开(公告)日：2018-07-17

申请号：US15406467

申请日：2017-01-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： MacKenzie Ryan Redding ,  Zachary David Fieldman ,  Justin Mamrak

IPC: B22F3/10 ,  B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K15/00 ,  B23K26/342 ,  B23K26/08 ,  B23K37/02 ,  B23K26/14

Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

公开(公告)号：US20170232682A1

公开(公告)日：2017-08-17

申请号：US15041973

申请日：2016-02-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Eliezer Manuel ALCANTARA MARTE ,  Zachary David Fieldman ,  Thomas Sinnett ,  Daniel Joerger ,  Neal Dunham ,  Mike Miller

IPC: B29C67/00

CPC classification number: B29C64/40 ,  B22F3/1055 ,  B22F2003/1058 ,  B29L2031/00 ,  B33Y10/00 ,  B33Y40/00 ,  Y02P10/295

Abstract: The present disclosure generally relates to methods for additive manufacturing (AM) that utilize support surrounding structures in the process of building objects, as well as novel surrounding support structures to be used within these AM processes. The support structure surrounds at least a portion of the object with a continuous thickness of powder disposed between the support structure and the object, the continuous thickness of powder having a maximum thickness that does not exceed 10 mm.