Method for reducing tensile stress zones in the surface of a part
AssigneeSurface Technology Holdings, Ltd.
InventorPaul S. Prevey, III
Life of this patent
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Abstract
The present invention is a novel method for reducing tensile zones in the surface of a part comprising the steps of selecting a region of the part to be treated and programming a control unit of a burnishing apparatus to perform a burnishing operation, the burnishing operation being performed such that the density of burnishing and the magnitude of compression are varied to reduce the high tensile stress along the boundaries of the selected region. In a preferred embodiment of the invention the burnishing operation induces a deep layer of compression within the surface having associated cold working of less than about 5.0 percent.
Claims11
A method of reducing zones of high tensile stress in the surface of a part comprising the steps of:
- selecting a region of the part to be treated;
- and
- exerting a variable pressure against the surface of the selected region, the pressure being applied such that the magnitude of compression decreases in the direction towards the boundaries of the selected region to minimize the effects of any tensile stress zones near the boundaries.
A method of reducing high tensile stress zones in the surface of a part comprising the steps of:
- selecting a region of the part to be treated;
- and
- programming a control unit of a burnishing apparatus to perform a burnishing operation, the burnishing operation being performed such that the density of burnishing, the magnitude of compression, and the pressure being applied against the surface are varied to reduce the high tensile stress zones along the boundaries of the selected region.
Dependencies are inferred from the claim text.