Process for the low-distortion thermomechanical treatment of workpieces in mass production as well as application of the process
US4832764A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1986 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In the system, heating device (2), quenching press (4), tempering device (6), and cooling device (8) are connected one directly after the other in such a way that the workpieces (10) pass through the individual stations with specified cycle times and without heat loss. The temperature-time response during the individual treatment steps is controlled by means of a central program control in accordance with a specified program determined by testing and/or calculation. The system is especially suitable for use in the fully automatic, thermomechanical treatment in mass production of disk springs, especially those which have a greater hardness at the free ends of the lamellae than in the remaining areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.