Process and a device for continuous surface treatment of rod-shaped, longitudinally extended materials with metal surfaces using a magnetically displaced plasma arc
US5354963A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1993 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Mar 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a process and a device for surface heat treatment of rod-shaped, longitudinally extended materials with metal surfaces by means of an arc, which rotates and is magnetically driven around the axis of the billet, wherein the arc moves between an annular electrode (anode) and the billet serving as cathode that runs through it. According to the invention, the problem of developing improved measures for stabilizing an arc, inter alia, is solved by rotating the arc by a direct current magnet arranged behind the annular electrode in the direction in which the billet runs and at the same time the magnetic field induced by the direct current magnetic counteracts the pulling effect on the arc base point by the moved billet and the annular electrode current is divided into two divided currents. The field of application is primarily surface heat-treating of rod-shaped, longitudinally extended materials with metal surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.