Electrochemical machining tools and methods
US-9162301-B2 · Oct 20, 2015 · US
Method for electro-chemical machining turbine wheel in-situ
US2016279722A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016279722-A1 |
| Application number | US-201514671365-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 27, 2015 |
| Priority date | Mar 27, 2015 |
| Publication date | Sep 29, 2016 |
| Grant date | — |
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- Title
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Abstract
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A method for electro-chemical machining (ECM) is provided. Methods may include providing an ECM machine including a controller and a fixture configured for positioning an electrode for ECM, positioning the fixture in a selected dovetail slot of a plurality of dovetail slots in a turbine wheel, the turbine wheel being positioned in-situ in a turbomachine, the fixture positioning the electrode for ECM of a portion of the selected dovetail slot, applying an electrolyte solution between the selected dovetail slot and the electrode, and removing material from the portion of the selected dovetail slot by applying an electric potential to the electrode to create a potential gradient between the electrode and the portion of the selected dovetail slot. The machining may be repeated for each dovetail slot of the turbine wheel in-situ in the turbomachine.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for electro-chemical machining (ECM), comprising: providing an ECM machine including a controller and a fixture configured for positioning an electrode for ECM; positioning the fixture in a selected dovetail slot of a plurality of dovetail slots in a turbine wheel, the turbine wheel being positioned in-situ in a turbomachine, the fixture positioning the electrode for ECM of a portion of the selected dovetail slot; applying an electrolyte solution between the selected dovetail slot and the electrode; and removing material from the portion of the selected dovetail slot by applying an electric potential to the electrode to create a potential gradient between the electrode and the portion of the selected dovetail slot. 2 . The method of claim 1 , further comprising: removing the fixture from the selected dovetail slot; and repeating the positioning, applying and the removing for each dovetail slot of the plurality of dovetail slots. 3 . The method of claim 1 , wherein the fixture visually obstructs the ECM in the selected dovetail slot. 4 . The method of claim 1 , wherein the portion of the selected dovetail slot includes an edge of a cooling slot within the selected dovetail slot.
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Classifications
Repairing, retrofitting or upgrading methods · CPC title
of axial insertion type · CPC title
Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures · CPC title
Electrodes specially adapted therefor or their manufacture (B23H9/00 takes precedence) · CPC title
Repairing methods or devices · CPC title
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- What does patent US2016279722A1 cover?
- A method for electro-chemical machining (ECM) is provided. Methods may include providing an ECM machine including a controller and a fixture configured for positioning an electrode for ECM, positioning the fixture in a selected dovetail slot of a plurality of dovetail slots in a turbine wheel, the turbine wheel being positioned in-situ in a turbomachine, the fixture positioning the electrode fo…
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification B23H9/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Sep 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).