What is the specific production process of Liling underglaze porcelain?

The traditional Liling underglaze multicolored porcelain adopts the "three-firing" manufacturing process, and its production process is: firstly, the molded unglazed body is subjected to low-temperature prime firing, then colored, and then the colored green body is subjected to the second low-temperature prime firing, finally covered with lime glaze, and fired in the atmosphere of first oxidation and then reduction in a high-temperature kiln. The most obvious advantages of the "three firing" process are that the lime glaze has good fluidity, high transparency, smooth glaze surface, clear and flat surface and elegant color. Since the late 1950s, most of Liling underglaze colors have been fired twice except for special products. The production process is: firstly, the blank with feldspar glaze is fired at low temperature, then colored, and then sprayed with a thin layer of glaze, which can be fired in a high temperature kiln. Because of the high initial melting temperature and high surface tension of feldspar glaze, the color of pigment is relatively stable, which is not as easy to produce smoke defects as lime glaze. The whiteness of feldspar glaze is higher than that of traditional lime glaze, and the brightness of underglaze color materials is also obviously improved, and the decorative effect is fresher and brighter.

Liling's underglaze colorful decoration is eclectic, including flowers and birds, feathers, landscapes, insects, figures and animals, patterns, calligraphy, etc., and there are various decoration techniques, but among many decoration techniques, Liling's underglaze color is the most prominent one. The excellent use of lines is an important reason for the beauty of Liling glaze under five colors. The painter's crochet shows superb skills and rich experience, which is full of decorative characteristics. There are two kinds of decorative lines: hook line and printing line. For example, some high-end display porcelain side foot lines often use printing lines, while the theme flower-and-bird decorative lines are hand-hooked. Lines are divided into ink lines and color lines. The colored lines show bright colors after being fired according to the preset colors, while the ink lines disappear at a certain temperature, showing blank lines, which is the unique artistic effect of Liling underglaze multicolored porcelain.

Liling underglaze multicolored porcelain, with its unique charm, has had a glorious history, and its charm remains undiminished, attracting people's attention, praise, love and collection. Ceramics is the pillar industry of Liling, the capital of porcelain. However, there are not many people engaged in the research and production of underglaze porcelain in Liling. Inheriting and carrying forward this traditional handicraft art is the glorious mission of our generation who love and engage in underglaze porcelain. We have the responsibility to carry forward Liling underglaze porcelain, a national traditional craft, and make the wonderful flowers in this ceramic art garden more colorful and never fade.