公开(公告)号：WO2019147380A1

公开(公告)日：2019-08-01

申请号：PCT/US2018/067806

申请日：2018-12-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： ROYCHOWDHURY, Subhrajit ,  HOEBEL, Matthias ,  YUAN, Lang ,  SINGH, Prabhjot ,  GRAHAM, Michael Evans ,  FILKINS, Robert John ,  ETTER, Thomas ,  ROERIG, Felix Martin Gerhard

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

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 is configured to simultaneously modulate the intensity of the laser beam to thermally control the melt pool.