Process for heat treating metals or metal alloys in a thermal plasma
US4872926A · kind A · utility
10Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1987 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Dec 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/09
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Workpieces of metal are treated with a high temperature, ambient pressure argon arc plasma system to facilitate surface and through hardening. The argon flame is directed against the outer surface of the rotating workpiece. The surface temperature is monitored by a non contact I.R. temperature sensor and controlled by varying the inert gas flowrate through the plasma generator and/or varying the electrical power input to the plasma generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.