A kind of high-brightness underglaze red porcelain and its manufacturing process

Abstract

The invention provides high-brightness underglaze red porcelain made by drawing patterns on a green body with copper red, applying transaprent glaze, and firing in a kiln, wherein the green body is made from, by weight, 45-50 parts of kaolin, 20-25 parts of quartz, 18-23 parts of dolomite, 10-15 parts of alumina, 8-12 parts of bone powder, 5-8 parts of expanded perlite, 3-5 parts of expanded vermiculite, and 5-8 parts of silica fume, and the transaprent glaze is made from, by weight, 15-25 parts of sodium silicate, 10-18 parts of calcium silicate, 5-10 parts of glass powder, 5-8 parts of dolomite, 3-8 parts of silicic acid, 1-3 parts of zinc sulfate, and 1-3 parts of silica fume. The high-brightness underglaze red porcelain has the advantages that the glaze surface is flat, bright and smooth, the porcelain has glass texture and bright color with vivid lines, the porcelain is a feast to eyes and may be made into daily products, such as dinnerware, bricks, plates and crafts, and the porcelain has high aesthetic value and economic significance.

Description

technical field [0001] The invention belongs to the technical field of ceramic material manufacturing, and in particular relates to a high-brightness underglaze red porcelain and a manufacturing process thereof. Background technique [0002] Underglaze red porcelain is an art treasure among traditional Han ceramics, and it belongs to one of the important inventions of the Han working people in Jingdezhen in the middle of the Yuan Dynasty. The production process is roughly the same as that of contemporary blue and white porcelain. It uses copper oxide as the coloring agent. After painting and decoration on the tire, it is covered with transparent glaze and fired in a high-temperature reducing flame atmosphere. Because the red pattern is under the glaze, it is called underglaze red porcelain. In the prior art, the firing process of underglaze red porcelain is complex, difficult to fire, low yield, and high in price. The fired underglaze red porcelain is prone to defects of i...

AI Technical Summary

Problems solved by technology

In the prior art, the firing process of underglaze red porcelain is complex, difficult to fire, low yield, and high in price. The fired underglaze red porcelain is prone to defects of impure red and dull color. In the firing process, copper ions even volatilize and escape from the glaze layer, showing a phenomenon of fading, which in turn causes incoherent decoration. Therefore, it is of great economic significance to provide a high-brightness underglaze red porcelain

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