Fine-pottery sanitary ceramic body and manufacturing method thereof

Abstract

The invention relates to a fine-pottery sanitary ceramic body and a manufacturing method thereof and belongs to the technical field of ceramic products, which is used for reducing the deformation of a sanitary ceramic product and improving the quality of glaze. The fine-pottery sanitary ceramic body is characterized in that a body raw material comprises the following components in part by mass: 10 to 30 parts of ball clay, 30 to 60 parts of kaoline, 5 to 15 parts of porcelain clay, 5 to 15 parts of quartz and 5 to 15 parts of wollastonite, wherein the kaoline comprises 10 to 25 calcined kaoline. In the manufacturing method, the raw materials and the adding proportion of the fine-pottery body are preferably selected, the crystal phase content of mullite, quartz and the like is controlled, and the glass phase content and the high-temperature plastic deformation are reduced so as to fulfill the aim of reducing the deformation of fine-pottery sanitary ceramics; while reducing the hygroscopic expansion of the body, the manufacturing method improve thermal expansion coefficient of the body at the temperature of 200 DEG C to make the glaze bear high compressive stress, thereby improving the anti-cracking performance of products and ensuring enough long service life. Through the refinement of slurry granularity, the method remarkably reduces the occurrence of disadvantage of glaze pinholes, does not need to reduce the pinholes by using engobe, simplifies a production process, and improves the production efficiency and the qualification rate of the products.

Description

technical field [0001] The invention relates to a sanitary ware and a manufacturing method thereof, in particular to a fine pottery sanitary ceramic body and a manufacturing method thereof, belonging to the technical field of ceramic products. Background technique [0002] The artistry and personalization of bathroom space decoration design put forward higher standard requirements for the manufacture of bathroom products, especially for the regularity of large-size products. The larger the size of the ceramic product, the more difficult it is to fire it. In addition to the easy cracking of the product, quality problems such as surface deformation, edge deformation, and overall distortion are one of the main reasons for product failure. Sanitary ceramic products are generally porcelain bodies. After firing at a high temperature of 1200-1250 ° C, the water absorption rate is not more than 0.5%. During the high-temperature firing process, due to the rapid softening of the glass...

AI Technical Summary

Problems solved by technology

However, due to the high water absorption rate of ceramic sanitary ceramics, it is easy to absorb moisture and expand during use, resulting in the fatal flaw of cracking in the later stage of the glaze, which shortens the service life of the product

Moreover, the traditional ceramic sanitary ceramics have coarse particles and many pinholes on the glaze surface. It is necessary to use cosmetic soil to cover the green body to reduce the pinholes on the glaze surface. However, the use of cosmetic soil leads to a complicated production process, which is prone to defects such as rolling glaze, and the product qualification rate is low.

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