Pour tube with improved flow characteristics
US6425505B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A pour tube for use in the continuous casting of a stream of molten metal has a bore comprising a plurality of fluidly connected sections that improve the flow of molten metal through the bore. The sections reduce asymmetric flow of the molten metal stream and the likelihood of precipitates clogging the bore. Each section comprises a converging portion and a diverging portion. The converging portion deflects the stream toward the center of the bore, while the diverging portion diffuses the stream. The sections may comprise a plurality of frusto-conical sections. The cross-sectional areas of the sections may increase, decrease, or remain the same size from an upstream to a downstream position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.