公开(公告)号：US20190143585A1

公开(公告)日：2019-05-16

申请号：US15811409

申请日：2017-11-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： David BARNHART ,  Douglas Gerard Konitzer

IPC: B29C64/165 ,  B29C64/40 ,  B22F3/00

Abstract: A method of fabricating an object is provided. The method includes depositing a first material between second material such that the second material is at opposite sides of the first material, the first material forming a metal, ceramic, or metal-ceramic. The second material is selectively removable from the first material to reveal sidewalls of the first material so that the first material has a more uniform vertical profile than would be the case if the first material was deposited without the second material.

公开(公告)号：US20190060998A1

公开(公告)日：2019-02-28

申请号：US15688426

申请日：2017-08-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Rajendra KELKAR ,  David BARNHART

IPC: B22F3/105

Abstract: The present disclosure relates to systems, methods, and apparatuses for supplying powder to a powder bed during an additive manufacturing process. A recoater apparatus includes a powder reservoir and a powder distribution system for conveying powder from the powder reservoir to the powder bed. The recoater apparatus further includes at least two sweep strips, wherein at least one exit of the powder distribution system is located between the two sweep strips so as to shield the exit of the powder distribution system.