Title:
タービンノズル壁の厚みを鋳造後放電加工で低減する方法
Document Type and Number:
Japanese Patent JP4402260
Kind Code:
B2
Abstract:
A post-cast EDM process is used to remove material (34) from the interior surface of a nozzle vane cavity of a turbine. A thin electrode (28) is passed through the cavity (18) between opposite ends of the nozzle vane (16) and displaced along the interior nozzle wall to remove the material (34) along a predetermined path, thus reducing the thickness of the wall between the cavity and the external surface of the nozzle. In another form, (not shown) an EDM process employing a profile as an electrode is disposed in the cavity and advanced against the wall to remove material from the wall until the final wall thickness is achieved, with the interior wall surface being complementary to the profile surface.
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Inventors:
Raymond Joseph Jones
Parbangada, Ghanapathy, Bajapa
Francis Lawrence Kirkpatrick
Margaret Jones Scotch
Rajib Rajan
Bin way
Parbangada, Ghanapathy, Bajapa
Francis Lawrence Kirkpatrick
Margaret Jones Scotch
Rajib Rajan
Bin way
Application Number:
JP2000163929A
Publication Date:
January 20, 2010
Filing Date:
June 01, 2000
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
F01D9/02; B22D29/00; B22D31/00; B23H9/00; B23H9/02; B23H9/10; F01D5/18
Domestic Patent References:
| JP53015688B2 |
Foreign References:
| US5152059 | ||||
| US3156808 | ||||
| GB2211775A |
Attorney, Agent or Firm:
Arakawa Satoshi