公开(公告)号：US10821551B2

公开(公告)日：2020-11-03

申请号：US15881054

申请日：2018-01-26

Applicant: General Electric Company

Inventor： Subhrajit Roychowdhury ,  Matthias Hoebel ,  Michael Evans Graham ,  Robert John Filkins ,  Felix Martin Gerhard Roerig ,  Donnell Eugene Crear ,  Prabhjot Singh

IPC: B23K26/342 ,  B23K26/06 ,  B23K26/08 ,  B23K26/073 ,  B23K26/082 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B22F3/105 ,  B22F3/00

Abstract: An additive manufacturing system includes a laser device, a build plate, and a scanning device. The laser device is configured to generate a laser beam with a variable intensity. The build plate is configured to support a powdered build material. The scanning device is configured to selectively direct the laser beam across the powdered build material to generate a melt pool on the build plate. The scanning device is configured to oscillate a spatial position of the laser beam while the laser device simultaneously modulates the intensity of the laser beam to facilitate reducing spatter and to facilitate reducing a temperature of the melt pool to reduce overheating of the melt pool.

公开(公告)号：US10695867B2

公开(公告)日：2020-06-30

申请号：US15915406

申请日：2018-03-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Thomas Etter ,  Matthias Hoebel ,  Felix Martin Gerhard Roerig

IPC: B23K26/342 ,  B23K26/34 ,  B33Y10/00 ,  B33Y30/00 ,  B23K26/082 ,  B23K26/06 ,  B23K26/10 ,  B23K26/03 ,  B23K26/0622

Abstract: Controlling microstructure in an object created by metal powder additive manufacturing is disclosed. During additive manufacturing of one or more objects using an irradiation beam source system, for each respective layer in a selected range of layers including a cross-sectional area of the one or more objects including the selected object, a duration controller controls actuation of each irradiation device to maintain constant a sum of: an irradiation device melting time, an irradiation device idle time, and a recoating time expended applying a new powder material layer, while otherwise maintaining all other operation parameters of each irradiation device constant.

公开(公告)号：US10695866B2

公开(公告)日：2020-06-30

申请号：US15493313

申请日：2017-04-21

Applicant: General Electric Company

Inventor： Felix Martin Gerhard Roerig ,  Thomas Etter ,  Matthias Hoebel ,  Julius Andreas Schurb

IPC: B23K26/342 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F3/105

Abstract: In some cases, an additive manufacturing (AM) system includes: a process chamber for additively manufacturing a component, the process chamber having: a build platform; at least one melting beam scanner configured to emit a melting beam for melting powder on the build platform; an applicator for applying layers of powder to the build platform; and a reservoir for storing powder; and a control system coupled with the set of melting beam scanners, the control system configured to: apply the melting beam to a layer of powder on the build platform along a primary melting path; and apply the melting beam to the layer of powder on the build platform along a re-melting path after applying the melting beam along the primary melting path, the re-melting path overlapping a portion of the primary melting path and applied only in an area proximate a perimeter of the component.

公开(公告)号：US20190232428A1

公开(公告)日：2019-08-01

申请号：US15881147

申请日：2018-01-26

Applicant: General Electric Company

Inventor： Subhrajit Roychowdhury ,  Matthias Hoebel ,  Lang Yuan ,  Prabhjot Singh ,  Michael Evans Graham ,  Robert John Filkins ,  Thomas Etter ,  Felix Martin Gerhard Roerig

IPC: B23K26/342 ,  B23K26/02 ,  B23K26/06 ,  B23K26/064 ,  B23K26/082 ,  B23K26/08

Abstract: An additive manufacturing system includes a laser device, a build plate, and a scanning device. The laser device is configured to generate a laser beam with a variable intensity. The build plate is configured to support a powdered build material. The scanning device is configured to selectively direct the laser beam across the powdered build material to generate a melt pool on the build plate. The scanning device is configured to oscillate a spatial position of the laser beam while the laser device is configured to simultaneously modulate the intensity of the laser beam to thermally control the melt pool.

公开(公告)号：US20190232427A1

公开(公告)日：2019-08-01

申请号：US15881054

申请日：2018-01-26

Applicant: General Electric Company

Inventor： Subhrajit Roychowdhury ,  Matthias Hoebel ,  Michael Evans Graham ,  Robert John Filkins ,  Felix Martin Gerhard Roerig ,  Donnell Eugene Crear ,  Prabhjot Singh

IPC: B23K26/342 ,  B23K26/073 ,  B23K26/06 ,  B23K26/082 ,  B23K26/08

Abstract: An additive manufacturing system includes a laser device, a build plate, and a scanning device. The laser device is configured to generate a laser beam with a variable intensity. The build plate is configured to support a powdered build material. The scanning device is configured to selectively direct the laser beam across the powdered build material to generate a melt pool on the build plate. The scanning device is configured to oscillate a spatial position of the laser beam while the laser device simultaneously modulates the intensity of the laser beam to facilitate reducing spatter and to facilitate reducing a temperature of the melt pool to reduce overheating of the melt pool.