Method for improving the magnitude of compressive stress developed in the surface of a part
US7188398B2 · kind B2 · utility
12Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2004 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Jul 20, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/476
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.