Molten metal degassing apparatus
US6679936B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D3/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A tool or fluxing head for fluxing molten metal that comprises a fluxing gas supply line that communicates with the interior of an inverted plunger cup providing a hollow interior into which refining agents and other additives that are to be introduced into a molten metal can be incorporated. In use, the fluxing head is introduced into a molten metal body with the plunger cup in the inverted position. The inverted plunger cup has a closed top at the point where the gas supply line enters and an open bottom that allows molten metal to enter the inverted cup to make contact with the refining agent or other additive. Apertures are provided in the wall of the inverted plunger cup to allow gas introduced therein to escape therefrom. According to a preferred embodiment, a porous layer is provided at the top of the inverted plunger cup to allow for the escape of gas into the molten metal through the porous layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.