Method for heat treatment of metal workpieces as well as a heat-treated workpiece
US7559995B2 · kind B2 · utility
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2References
12Claims
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Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B5/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A process for heat treating metal workpieces contains with respect to an efficient process control the following successive operations following directly one after the other: a heating phase; an enrichment phase; a first cooling phase; a bonding phase; a second cooling phase; and a concluding quenching phase. Workpieces processed by a method of this type are distinguished by a comparatively great fatigue limit and fatigue strength with simultaneous high resistance to wear and tear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.