Mold with thermally insulating, protective coating
US4425411A · kind A · utility
24Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1982 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | May 10, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C3/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The mold features on its work face a thermally insulating protective layer of sub-micron metal oxide particles. The coating can be applied by spraying an aqueous sol of a metal oxide onto the mold work face which has been heated to at least 60.degree. C. The use of sub-micron sized metal oxide particles enables the formation of a protective coating of very low density and consequently very low thermal conductivity. The coating can furthermore be deposited very economically, and likewise removed again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.