公开(公告)号：US20230390825A1

公开(公告)日：2023-12-07

申请号：US18250846

申请日：2021-10-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jacob Mayer ,  Victor FULTON ,  Carlos H. BONILLA

IPC: B22F12/00 ,  B22F12/53 ,  B22F12/90 ,  B33Y30/00

CPC classification number: B22F12/38 ,  B22F12/53 ,  B33Y30/00 ,  B22F12/90 ,  B22F12/222

Abstract: An apparatus for forming a three-dimensional article having successive layers of a powder material, which layers correspond to successive cross-sections of the three-dimensional article includes a process chamber that includes a process chamber floor having an opening therethrough, the opening defining a part processing area and a lid management system. The lid management system includes an actuator including a movable arm that moves between retracted and extended positions and a machine lid connected to the movable arm. The machine lid is sized and configured to sealingly engage a perimeter of the opening of the process chamber floor with the movable arm in the extended position.