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.

公开(公告)号：US20180345382A1

公开(公告)日：2018-12-06

申请号：US15615163

申请日：2017-06-06

Applicant: General Electric Company

Inventor： Subhrajit Roychowdhury ,  James William Sears ,  Harry Kirk Mathews, JR.

IPC: B22F7/06 ,  H01S5/40 ,  H01S5/042 ,  H01S3/04 ,  B23K10/02

Abstract: A powder melting device for an additive manufacturing system including a laser device configured to emit an energy beam and a beam modulator. The beam modulator is configured to selectively induce an angular deflection in the energy beam for a predetermined time period such that the energy beam generates a plurality of melt pools in a powder bed.