Refractory pour tube with cast plate
US5866022A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Mar 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A refractory pour tube with a wear resistant plate includes a one-piece composite member formed of different refractory compositions, a casing disposed around a portion of the member, and castable refractory material disposed within the casing. The composite member has a tubular body portion defining an interior bore and an end portion defining a flat plate surface including an opening communicating with the bore. The end portion is formed of a hard refractory composition resistant to abrasion, while the tubular body portion is formed of a refractory composition resistant to thermal shock. First and second castable refractory materials are poured into the casing to form a refractory ring surrounding the flat plate surface and a refractory sleeve surrounding the tubular body portion. The refractory ring cooperates with the flat plate surface to form a hard, wear resistant plate suitable for use in a sliding valve assembly. The refractory sleeve insulates the casing from heat and, along with the refractory ring, secures the casing to the composite member. Manufacture of the pour tube requires minimal machining and is simplified and less expensive than formation of prior art pour tube…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.