Hermetically sealed arc furnace
US4027095A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 13, 1975 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Feb 13, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hermetically sealed arc furnace for producing stainless steel is disclosed which makes use, as a main raw material, a semi-reduced chrome ore pellet and a reduced iron ore pellet and by which these pellets are melted, decarburized and finally refined under a reduced pressure said hermetically sealed arc furnace capable of adjusting its interior reduced pressure, and particularly including a vacuum-tight seal between the furnace lid and furnace body, a telescopically sealed gap between the lid and an electrode extending therethrough and an exhaust opening detachably connected to a vacuum pump for reducing the internal pressure within the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.