Medium temperature color glaze base glaze formula

Medium temperature color glaze base glaze formula is potassium and sodium composite feldspar 35-45%, kaolin 6-8%, quartz 13-18%, limestone 10-15%, talc 0-8%, zinc oxide 0-6%, Barium carbonate 0-6%. Combined with the actual local materials, the choice of potassium and sodium comprehensive feldspar instead of potassium feldspar or sodium feldspar, reducing the production cost and firing temperature, while making the *** melting point of potassium and sodium is relatively low, the melting range is wider.

With the temperature increase set the viscosity of the solution decreases slowly, can reduce the glaze shrinkage. At the same time to improve the glaze and mechanical properties, melt properties and thermal stability, and can reduce the expansion coefficient of the glaze to prevent cracking the glaze, improve the elasticity of the glaze, improve the gloss of the glaze layer, reduce the surface tension of the glaze, and to promote the generation of billet glaze intermediate layer.

Medium temperature color glaze:

Medium temperature color glaze has the characteristics of glaze crystal, colorful, color and lustre is unchanged for a long time, and also has the advantages of low energy consumption, low cost, complete varieties, rich colors and so on. Chinese color glaze products sell well in Europe, America and Southeast Asia, enjoy a high reputation in the market.

The glaze quality of ceramic products is the key to determine the quality of its products. Decide the glaze quality is good or bad, the key lies in the glaze formula of scientific and reasonable. Medium temperature color glaze is the color pigment or coloring metal oxides and with it the appropriate proportion of the base glaze material mixed, and then after ball milling, sieve made of color glaze paste, applied to the plain billet.

Fired at 1238 ℃ and oxidizing atmosphere, the color glaze will produce a series of physical and chemical changes, the formation of decorative colors. Medium temperature color glaze is divided into two kinds: one is glossy color glaze, the other is non-glossy color glaze, both have their own characteristics, the color has a big red, orange, yellow, green, blue, blue, purple, black and so on thousands of kinds of colors, at present, all have been mass production.