公开(公告)号：US11780160B2

公开(公告)日：2023-10-10

申请号：US17337863

申请日：2021-06-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K Sachdev ,  Frederick E Pinkerton ,  Raja K Mishra ,  Tyson W Brown

IPC: B29C64/153 ,  H01F1/03 ,  B29C64/268 ,  B33Y70/00 ,  B22F10/28 ,  B22F10/38 ,  B22F10/50 ,  B33Y80/00 ,  C01B21/06 ,  B22F12/70 ,  B22F10/32 ,  B22F10/62

CPC classification number: B29C64/153 ,  B22F10/28 ,  B22F10/38 ,  B22F10/50 ,  B29C64/268 ,  B33Y70/00 ,  H01F1/0311 ,  B22F10/32 ,  B22F10/62 ,  B22F12/70 ,  B33Y80/00 ,  C01B21/0622

Abstract: A three-dimensional object may be manufactured using a powder bed fusion additive manufacturing technique. A layer of powder feed material may be distributed over a solid substrate and scanned with a high-energy laser beam to locally melt selective regions of the layer and form a pool of molten feed material. The pool of molten feed material may be exposed to gaseous nitrogen, carbon, or boron to respectively dissolve nitride, carbide, or boride ions into the pool of molten feed material to produce a molten nitrogen, carbon, or boron-containing solution. The molten nitrogen, carbon, or boron-containing solution may cool and solidify into a solid layer of fused nitride, carbide, or boride-containing material.

公开(公告)号：US11772162B2

公开(公告)日：2023-10-03

申请号：US17083758

申请日：2020-10-29

Applicant: GM Global Technology Operations LLC

Inventor： Md Ashabul Anam ,  Mark A Smith ,  Tyson W Brown ,  Richard J Skurkis ,  HyungMin Chae ,  Whitney A Poling

IPC: B22F10/00 ,  B22F3/10 ,  B29C64/35 ,  B33Y30/00 ,  B33Y10/00

CPC classification number: B22F10/00 ,  B22F3/1007 ,  B29C64/35 ,  B22F2201/20 ,  B33Y10/00 ,  B33Y30/00

Abstract: A powder bed fusion system includes a powder bed including a build surface and a vacuum system. The vacuum system includes a collection device positioned over the build surface. The collection device includes a body, a pathway defined in the body, wherein the pathway ends in a passageway opening, and a particle retainer connected to the body near the passageway opening. A method of forming a component includes forming a layer of unfused metal powder on a powder bed with a recoater, introducing gas to the powder bed and applying a vacuum with a collection device, fusing a portion of the layer of unfused metal powder on the powder bed with a heat source to form a component layer and generating contaminants, collecting the contaminants from the powder bed with the gas and the vacuum applied by the collection device.

公开(公告)号：US20210296027A1

公开(公告)日：2021-09-23

申请号：US17337863

申请日：2021-06-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil K Sachdev ,  Frederick E Pinkerton ,  Raja K Mishra ,  Tyson W Brown

IPC: H01F1/03 ,  B29C64/268

Abstract: A three-dimensional object may be manufactured using a powder bed fusion additive manufacturing technique. A layer of powder feed material may be distributed over a solid substrate and scanned with a high-energy laser beam to locally melt selective regions of the layer and form a pool of molten feed material. The pool of molten feed material may be exposed to gaseous nitrogen, carbon, or boron to respectively dissolve nitride, carbide, or boride ions into the pool of molten feed material to produce a molten nitrogen, carbon, or boron-containing solution. The molten nitrogen, carbon, or boron-containing solution may cool and solidify into a solid layer of fused nitride, carbide, or boride-containing material.