Continuous pressure molten metal supply system and method
US6536508B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A molten metal supply system (90) includes a plurality of injectors (100) each having an injector housing (102) and a reciprocating piston (104). A molten metal supply source (132) is in fluid communication with the housing (102) of each of the injectors (100). The piston (104) is movable through a return stroke allowing molten metal (134) to be received into the housing (102) from the molten metal supply source (132), and a displacement stroke for displacing the molten metal (134) from the housing (102). A pressurized gas supply source (144) is in fluid communication with the housing (102) of each of the injectors (100) through respective gas control valves (146). The gas supply source (144) is used to pressurize a space formed between the molten metal (134) and the piston (104) during the return stroke of the piston (104) of each of the injectors (100).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.