What are the common ceramic pigments and their blending requirements?

Ceramic pigments are inorganic salts, that is, metal compounds. The formation of its color is mainly due to the coloring metal elements in its composition, which will eventually change color after baking for several hundred degrees or more than 1000 degrees. Due to the limited metal elements that can be colored after high temperature, the types of ceramic pigments are also limited, and their hair color can not be compared with painting pigments and organic printing pigments. In terms of color matching, it is the same as the blending principle of organic printing pigments, but there are differences, which cannot be copied mechanically. Ceramic pigments can be divided into high-temperature pigments and low-temperature pigments according to the conditions of use. High-temperature pigment means that when the temperature is 1000~ 1500℃, its color is stable, and it is mostly used in glazes and green bodies. Low-temperature pigment refers to the color stability when used at 700~850℃, and is used on glaze. It is mostly used for screen printing decals and artistic porcelain paintings, with a little more colors than high-temperature pigments. Pigments at different temperatures cannot be matched with each other, and the matching and matching of pigments containing different metal elements are also limited.

Adapt to the technological conditions of ceramic pigments. In ceramic production enterprises, all kinds of pigments and pigments used in different ceramic products should meet the actual production process requirements, form the expected decorative effect and improve the product grade. At present, ceramic pigments and pigments used in building sanitary ceramic products are more abundant than those used in daily life. Decoration methods of building sanitary ceramics products are divided into underglaze color, underglaze color, underglaze color, colored porcelain tire, colored glaze and makeup soil. However, although there are many decorative techniques of pigments, the use effect and selection range have their own advantages and disadvantages, so we should choose them strictly when using them. For example, the underglaze color is underglaze color, covered with a layer of transparent glaze, and the underglaze is colored pattern, which has a good sense of decorative glass. However, due to the high firing temperature [1200- 1320℃], the range of optional pigments is narrow; Overglaze color is to apply pigment to glaze. After low temperature firing, the pigment adheres to the glaze. Because the baking temperature is low [650-830 degrees], it has the advantage of wide selection range of pigments.