Surface treatment method for a steel workpiece using high speed shot peening
US5816088A · kind A · utility
24Cited by
2References
13Claims
0Family size
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Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/479
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Fatigue-resistance is significantly increased by performing shot peening using fine shots. A plurality of particles of hard metal having a diameter ranging from 20 to 100 micrometers are ejected onto a surface of a steel workpiece at an impinging speed greater than 80 m/second. The impinging speed is controlled so that the upper limit of temperature rising of the surface of the workpiece is maintained at a temperature more than 150.degree. C. but less than the temperature at which recovery recrystallization and austentizing of steel occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.