Method for producing porcelain, porcelain and ceramic isolator formed from porcelain
AssigneeSiemens Aktiengesellschaft
InventorJohannes Liebermann
Life of this patent
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Abstract
A process is described for producing porcelain, in particular high-strength porcelain and a ceramic insulator. To produce the porcelain, calcined bauxite is used instead of alumina. The simultaneous addition of clay and kaolin, in each case containing more than 5% by weight of foreign metal oxide inclusions, results in a porcelain which, compared to an alumina porcelain of the same mechanical strength, can be produced at significantly lower cost. The porcelain is suitable in particular for applications for highly mechanically loaded components used in electrical insulation.
Claims19
A process for producing porcelain, which comprises the steps of:
- mixing calcined bauxite, clay containing more than 5% by weight of first foreign metal oxide inclusions, kaolin containing more than 5% by weight of second foreign metal oxide inclusions, feldspar and magnesium silicate resulting in a mixed compound;
- milling and processing the mixed compound resulting in a slurry;
- processing the slurry into a shapeable starting compound;
- drying the starting compound;
- and
- sintering the starting compound to produce the porcelain.
Porcelain, comprising:
- a mixture of calcined bauxite, clay containing more than 5% by weight of first foreign metal oxide inclusions, kaolin containing more than 5% by weight of second foreign metal oxide inclusions, feldspar, and magnesium silicate.
A ceramic insulator, comprising an insulating material made from a porcelain mixture of calcined bauxite, clay containing more than 5% by weight of first foreign metal oxide inclusions, kaolin containing more than 5% by weight of second foreign metal oxide inclusions, feldspar, and magnesium silicate.
Dependencies are inferred from the claim text.