公开(公告)号：US11458439B2

公开(公告)日：2022-10-04

申请号：US16065991

申请日：2016-12-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Linglu Yang ,  Peng Wang ,  Su Lu ,  Zhen Liu ,  Yun Peng ,  Lawrence C. Costa

IPC: B01D69/06 ,  B01D69/10 ,  B01D67/00 ,  B01D71/68 ,  B01D63/10 ,  B01D69/02 ,  B01D69/12

Abstract: The disclosure of the present invention relates to a method for preparing membrane and associated membrane and filter element. The method comprises providing a porous substrate having a plurality of pores; and applying a pre-filler solution to at least partially occupy the pores in the porous substrate. The membrane comprises a porous substrate and a filter layer formed on the porous substrate. The filter element comprises a core tube; and a membrane as prepared and rolled around the core tube.

公开(公告)号：US20190240774A1

公开(公告)日：2019-08-08

申请号：US15888828

申请日：2018-02-05

Applicant: General Electric Company

Inventor： William Thomas Carter ,  Zhen Liu ,  Younkoo Jeong ,  Michael Robert Tucker

IPC: B23K26/08 ,  B33Y10/00 ,  B33Y30/00 ,  B23K26/342

CPC classification number: B23K26/0823 ,  B23K26/083 ,  B23K26/342 ,  B33Y10/00 ,  B33Y30/00

Abstract: A powder bed containment system for use with a rotating direct metal laser melting (DMLM) system includes an annular build plate, which includes an inner wall, an outer wall concentric with the inner wall and spaced radially apart from the inner wall, and a substantially planar build surface extending between the inner wall and the outer wall, where the substantially planar build surface is arranged to receive a weldable powder for manufacture of an object. The powder bed containment system also includes an outer containment wall radially outward of the outer wall of the annular build plate, an inner containment wall radially inward of the inner wall of the annular build plate, and at least one actuator mechanically coupled to at least one of i) the outer containment wall and ii) the inner containment wall, where the at least one actuator is configured to raise at least one of i) the outer containment wall and ii) the inner containment wall axially relative to the substantially planar build surface during manufacture of the object.

公开(公告)号：US20230398744A1

公开(公告)日：2023-12-14

申请号：US18250657

申请日：2021-10-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Srinivas Pendurti ,  Carlos H. Bonilla ,  Timothy Francis Andrews ,  Zhen Liu ,  Cassidy C. Shibiya

IPC: B29C64/371 ,  B29C64/165

CPC classification number: B29C64/371 ,  B29C64/165 ,  B33Y30/00

Abstract: According to various embodiments, an additive manufacturing apparatus comprises a process chamber surrounding a print head, a recoat head, and a linear motion stage to which the print head and the recoat head are coupled. The print head and recoat head operate within the process chamber to build a three-dimensional object by depositing a build material and a binder material. The additive manufacturing apparatus further comprises a condenser system fluidly coupled to the process chamber to receive a gas stream with a first vapor content from the process chamber and provide the gas stream with a second vapor content to the process chamber. The second vapor content is less than the first vapor content. Additionally, the additive manufacturing apparatus comprises a blower fluidly coupled to the process chamber and the condenser to flow the gas stream through a closed loop comprising the blower, the process chamber, and the condenser.