Method and apparatus for producing ceramic ware
US4215265A · kind A · utility
Inventor
Key dates
| Filing date | Dec 14, 1977 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Dec 14, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/66
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An electric kiln for firing ceramic ware in a reducing atmosphere has a substantially sealed chamber with electrical-resistance heating elements. A compartment is provided within the kiln for selectively introducing a reducing agent into the chamber. According to the method, the temperature within the chamber is raised to a predetermined level by energizing the heating elements. Upon attainment of the desired temperature level, a selected quantity of the reducing agent is introduced into the chamber for producing a reducing atmosphere during the maturing of the ceramic ware. As the temperature is raised to a level at which the heating elements would be damaged, a substantially neutral atomsphere is maintained in the chamber. Aslo during cooling, a reducing atmosphere is possible for further reduction of the ware and glazes thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.