Method for improving the magnitude of compressive stress...

Details Method for improving the magnitude of compressive stress... Method for improving the magnitude of compressive stress...

2007-03-13

2007-03-13

Hong, John C. (Department: 3726)

Metal working

Burnishing

Continuous feed

C029S090010

Reexamination Certificate

active

10759954

ABSTRACT:
This invention relates to a method and an apparatus for performing the method of inducing compressive residual stress along the surface of a part. In the preferred embodiment of the invention, the method includes burnishing or deep rolling a surface using a first and a second roller or ball burnishing members, whereby the first and second burnishing members may have a different diameter and/or modulus of elasticity. In another preferred embodiment of the invention, the burnishing operations may be performed while the surface of the part is at different temperatures.

REFERENCES:
patent: 6415486 (2002-07-01), Prevey, III
patent: 6926970 (2005-08-01), James et al.
patent: 701777 (1979-12-01), None

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