Casting of molten metal in an open ended mold cavity
US6158498A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 1997 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Oct 21, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/124
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
When the starter block commences reciprocating along the axis of an open ended mold cavity, with a body of start up material in tandem with it, successive layers of molten metal are relatively superimposed on the body of start up material, and layers thereof are confined to a first cross sectional area of the cavity but permitted to distend relatively peripherally outwardly from the circumferential outline of the first cross sectional area at relatively peripherally outwardly inclined angles to the axis while thermal contraction forces are generated in the respective layers and the magnitude of the forces is controlled so that the thermal contraction forces counterbalance the splaying forces in the respective layers and confer a free-formed circumferential outline on the resulting body of metal as it becomes form-sustaining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.