Protective layer for a refractory product
US11878933B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Nov 27, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D1/0006
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for treating a fused refractory product including more than 10% by mass of ZrO2, or “base product.” The process includes heating at least a portion of the surface of the product, so as to melt ZrO2 crystals in a superficial region extending to a depth of less than 2000 μm. The process includes cooling the molten superficial region obtained in the preceding step so as to obtain a protective layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.