Surface improvement of additively manufactured articles produced with aluminum alloys
US-10105798-B2 · Oct 23, 2018 · US
Additively controlled surface roughness for designed performance
US11904405B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11904405-B2 |
| Application number | US-202217665788-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 7, 2022 |
| Priority date | Dec 17, 2018 |
| Publication date | Feb 20, 2024 |
| Grant date | Feb 20, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A process for additively controlled surface features of a gas turbine engine casing. The process comprises forming the casing having an inner surface and an outer surface opposite the inner surface; forming a surface feature on the casing proximate the inner surface, wherein the surface feature comprises a structure on the inner surface configured to align or misalign with respect to a flow direction of a working fluid in a flow path of the casing.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for additively controlled surface features of a gas turbine engine casing comprising: forming the casing having an inner surface and an outer surface opposite said inner surface forming a surface feature on said casing proximate said inner surface, wherein said surface feature comprises a structure on said inner surface configured to at least one of align and misalign with respect to a flow direction of a working fluid in a flow path of said casing; wherein said surface feature is a scallop shaped formation, wherein the scallop shaped formation resembles a surface of scales of fish and snakes that align in a common direction. 2. The process according to claim 1 , wherein said scallop shaped formation includes curved edges oriented downstream relative to the flow direction. 3. The process according to claim 1 , further comprising: forming said surface feature along with the casing by use of additive manufacturing. 4. The process according to claim 1 , further comprising: forming said surface feature extending from the inner surface substantially perpendicular to the flow direction. 5. The process according to claim 1 , wherein said surface feature comprises the same material composition as said casing.
Assignees
Inventors
Classifications
- B23K26/0006Primary
taking account of the properties of the material involved (B23K26/32, B23K26/40 take precedence) · CPC title
Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS] · CPC title
to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures · CPC title
Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title
Scanning parameters, e.g. hatch distance or scanning strategy · CPC title
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- What does patent US11904405B2 cover?
- A process for additively controlled surface features of a gas turbine engine casing. The process comprises forming the casing having an inner surface and an outer surface opposite the inner surface; forming a surface feature on the casing proximate the inner surface, wherein the surface feature comprises a structure on the inner surface configured to align or misalign with respect to a flow dir…
- Who is the assignee on this patent?
- Raytheon Tech Corp, Rtx Corp
- What technology area does this patent fall under?
- Primary CPC classification B23K26/0006. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 20 2024 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).