公开(公告)号：US20240058865A1

公开(公告)日：2024-02-22

申请号：US18260324

申请日：2022-01-04

Applicant: ExOne Operating, LLC

Inventor： Patrick DOUGHERTY ,  Deborah M. WILHELMY ,  Kyle MYERS

IPC: B22F10/14 ,  C22C21/06 ,  B33Y10/00 ,  B22F10/64 ,  B33Y40/20 ,  B33Y70/00

CPC classification number: B22F10/14 ,  C22C21/06 ,  B33Y10/00 ,  B22F10/64 ,  B33Y40/20 ,  B33Y70/00 ,  B22F2201/02 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  B22F2301/052 ,  B22F2301/30

Abstract: A process for producing a high density aluminum alloy part from a green part like those produced by binder jet additive manufacturing is described. The process utilizes a build powder that includes a densification aid mixed with the aluminum alloy powder and gets incorporated into the green part during the printing process. In some cases, a continuous high flow of nitrogen gas and controlled heating of the green part and provides a high density aluminum alloy part exhibiting densities of 95% or greater.