Process for preventing contamination of high temperature melts
US4926439A · kind A · utility
5Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Sep 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of reducing "fall back" contamination caused by high intensity heating of metals is taught. Splatter, vapor droplets and particulate matter resulting from the high intensity heating is repelled to avoid return to the melt. An electric field is established above the heating zone to repel the vapor droplets and particles from at least one charged electrode disposed above the surface where high intensity heat is applied to a metal surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.