Filtration assembly having integral heating means for maintaining the metallic material being filtered in the molten state
US4834876A · kind A · utility
Inventor
Key dates
| Filing date | Mar 14, 1988 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Mar 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/119
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The filtration of molten metal is obtained by providing the filtration medium, which may, for example, be formed of a granulated material, with a conductive coating or conductive particles. Electrical energy is coupled across the filter to create a current flow through the conductive material. The magnitude of the current generates heat of a level sufficient to maintain the metallic material being filtered in the molten state as it passes through the filter medium. The granules may be covered with a conductive coating or conductive particles. In an alternative embodiment, the granules may be formed of a material, such as silicon carbide, which is capable of being inductively heating to maintain the metallic material being filtered in the molten state as it is passed through the filter medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.