Method and apparatus for producing hollow metal ingots
US4759399A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | May 7, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D27/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Hollow metal ingots are produced by a hollow metal manufacturing apparatus comprising a mold placed on a stool, and a cylindrical metallic cooling core placed in the mold to form an annular casting space therebetween. During the casting, a cooling fluid is directly blown upon the inner surface of the core while the cylindrical metallic core is allowed to be buckled. The cooling core is constituted by an outermost metallic cylinder to be brought into contact with a molten metal, a cylindrical lattice-fashioned buckling-adjusting frame positioned in the metallic cylinder and provides passages through which the cooling fluid is passed, and a cooling fluid vessel which is positioned inside the buckling-adjusting frame and is provided with a number of cooling fluid blowing nozzles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.