公开(公告)号：US20180001384A1

公开(公告)日：2018-01-04

申请号：US15200492

申请日：2016-07-01

Applicant: GENERAL ELECTRIC COMPANY

Inventor： John Alan MANTEIGA ,  Gregg Hunt WILSON ,  Stephen Joseph WAYMEYER

IPC: B22F3/24 ,  B33Y40/00 ,  B33Y10/00 ,  B33Y80/00 ,  B22F3/105

Abstract: The present disclosure generally relates to methods for additive manufacturing (AM) for fabricating multi-walled structures. A multi-walled structure includes a first wall having a first surface and a second wall having a second surface facing the first surface to define a passage having a width between the first surface and the second surface in a first direction. The multi-walled structure also includes an enlarged powder removal feature connecting the first wall and the second wall. The enlarged powder removal feature has an inner dimension greater than the width in the first direction and at least one open end in a direction transverse to the first width.