Process for the manufacture of gate valves for closure devices having a pouring nozzle and similar objects
US4248815A · kind A · utility
2Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Feb 6, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In order to manufacture a casting nozzle plate assembly, e.g., a sliding closure of a slide plate and collector nozzle, without having to further machine the working surface of one assembly a mold is arranged on a trued slab. A refractory concrete is poured into the mold while the mold is vibrated. The concrete is allowed to harden before being separated from trued slab. The resulting assembly has a smooth work (e.g., sliding) surface for contact with another element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.