Metallic article with integral end band under compression

Details Metallic article with integral end band under compression Metallic article with integral end band under compression

2005-05-17

2005-05-17

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

C416S22300B

Reexamination Certificate

active

06893225

ABSTRACT:
An article made of a metallic material and comprising a body and a body end portion integral with the body, includes a band of the metallic material at the end portion substantially through the entire end portion, the band being under a compressive stress greater than the body. An example of the article is a turbine engine balding member in which the body is the airfoil of the member and the band is disposed at the radially outer tip portion of the airfoil. One method for providing the band includes performing roller deformation on the end portion until a desired amount of compressive stress is developed in the band substantially through the entire end portion.

REFERENCES:
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patent: 5951790 (1999-09-01), Mannava et al.
patent: 6005219 (1999-12-01), Rockstroh et al.

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