Method for making a metallic article with integral end band under compression
AssigneeGeneral Electric Company
InventorsDavid William Crall, Peter John Linko, III
Life of this patent
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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 blading 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.
Claims6
In a method of making an article of a metallic material, the article comprising a body and an end portion integral with the body, the end portion comprising a band of the metallic material through the entire cross section of the end portion and integral with and into the body, the steps of:
- selecting a depth of the band into the end portion;
- and then,
- performing roller deformation on the end portion to the depth into the end portion until the compressive stress is provided through the entire cross section of the end portion.
Dependencies are inferred from the claim text.