Spatter reduction laser scanning strategy in selective laser melting
US-10220471-B2 · Mar 5, 2019 · US
Additive manufacturing powder spreading technology to mitigate surface defects
US11141912B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11141912-B2 |
| Application number | US-201916598260-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 10, 2019 |
| Priority date | Oct 10, 2019 |
| Publication date | Oct 12, 2021 |
| Grant date | Oct 12, 2021 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A laser powder bed fusion additive manufacturing system having a powder dispenser that provides powder layers on a build platform; a laser fusion system that fuses the powder layers, wherein spatter particles are produce on the powder layers; and a powder bed sweeping system that sweeps the spatter particles from the powder layers. The powder bed sweeping system includes a brush that has bristles that contact the spatter particles and sweeps the spatter particles from the powder layers.
First claim
Opening claim text (preview).
The invention claimed is: 1. The A powder bed fusion apparatus, comprising: a powder dispenser that provides powder layers on a build platform; a laser that fuses said powder layers, wherein spatter particles are produced on said powder layers; a powder bed sweeper that sweeps said spatter particles from said powder layers; a power source included in said powder bed sweeper; and vibrating brush bristles connected to said power source, wherein said vibrating brush bristles contact said spatter particles and sweep said spatter particles from said powder layer and wherein said vibrating brush bristles have a back-sloping tilt of said vibrating brush bristles within the range of forty five degrees to seventy five degrees from vertical. 2. The A powder bed fusion apparatus, comprising: a powder dispenser that provides powder layers on a build platform; a laser that fuses said powder layers, wherein spatter particles are produced on said powder layers; a powder bed sweeper that sweeps said spatter particles from said powder layers; a power source included in said powder bed sweeper; and vibrating brush bristles connected to said power source, wherein said vibrating brush bristles contact said spatter particles and sweep said spatter particles from said powder layer, and wherein said vibrating brush bristles have a back-sloping tilt of said vibrating brush bristles within the range of forty five degrees to seventy five degrees from vertical, and wherein said powder layers have individual powder particles with a powder particle diameter and wherein said vibrating brush bristles have spacing that is greater than said powder particle diameter. 3. A powder bed fusion method comprising the steps of: providing a powder dispenser that provides powder layers on a build platform; providing a laser that fuses said powder layers, wherein spatter particles are produced on said powder layers; providing a powder bed sweeper that sweeps said spatter particles from said powder layers wherein said sweeper has brush bristles; providing a power source connected to said powder bed sweeper; and using said power source to cause said brush bristles to vibrate, wherein said step of using said power source to cause said brush bristles to vibrate causes said vibrating brush bristles to have a back-sloping tilt, and wherein said step of using said power source to cause said brush bristles to vibrate causes said vibrating brush bristles to have a back-sloping tilt within the range of forty five degrees to seventy five degrees from vertical. 4. A powder bed fusion method comprising the steps of: providing a powder dispenser that provides powder layers on a build platform; providing a laser that fuses said powder layers, wherein spatter particles are produced on said powder layers; providing a powder bed sweeper that sweeps said spatter particles from said powder layers wherein said sweeper has brush bristles; providing a power source connected to said powder bed sweeper; and using said power source to cause said brush bristles to vibrate, wherein said step of using said power source to cause said brush bristles to vibrate causes said vibrating brush bristles to have a back-sloping tilt, wherein said step of using said power source to cause said brush bristles vibrate causes said vibrating brush bristles to have a front-sloping tilt.
Assignees
Inventors
Classifications
Auxiliary operations or equipment, e.g. for material handling · CPC title
Cleaning · CPC title
using laser beams; using electron beams [EB] · CPC title
- B29C64/153Primary
using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title
Processes of additive manufacturing · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11141912B2 cover?
- A laser powder bed fusion additive manufacturing system having a powder dispenser that provides powder layers on a build platform; a laser fusion system that fuses the powder layers, wherein spatter particles are produce on the powder layers; and a powder bed sweeping system that sweeps the spatter particles from the powder layers. The powder bed sweeping system includes a brush that has bristl…
- Who is the assignee on this patent?
- L Livermore Nat Security Llc, Lawrence Livermore Nat Laboratory Llc
- What technology area does this patent fall under?
- Primary CPC classification B29C64/153. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 12 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).