Apparatus and method for spill chilling rapidly solidified materials
US5149488A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1990 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Mar 28, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/064
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is for a device for rapidly solidifying a material and a method of using the same. The device provides for containing a molten pool of material in a solid skull with the same composition as the molten material. The skull is preferably held in a cavity of an inductor which is heated by an induction coil. Means are provided to maintain a small temperature gradient in the skull so as to minimize segregation which can lead to compositional fluctuations. It is preferred that the minimum temperature in the skull is between about 0.7 and 0.95Tm, where Tm is the melting or solidus temperature of the material. Feed means provide material to the molten pool causing it to spill over onto a moving chill surface. Preferably the chill surface is cooled by a molten stream of liquid gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.