How the tableware of pottery and porcelain of choose and buy?

We focus on how to every day in health on food security, rarely looked on tableware. Tableware is the necessary tools for eating, it is closely related to our health, hurry to see how healthy, beautiful, practical ceramic tableware to choose! 1, when the choose and buy, look from porcelain ceramic daily necessities to bone porcelain, strengthen porcelain is preferred, both are fine tableware materials. Bone China is the world recognized high-grade porcelain, it is not a pure white, but the natural milk white, transparency is very high, quality and lighter. Bone China itself to shape and colour and lustre formation which rely on silicon oxide, aluminum oxide and calcium oxide, calcium oxide content of the higher, the color, the better. In nature, the source of calcium is not much, so choose bone powder of animals as a source of calcium. When the bone content reaches a certain proportion, porcelain will greatly improve, this is mainly embodied in the vessel luster and moist degree. But if the content is above a certain proportion, porcelain will become soft, forming in the production process is difficult, difficult to burn, and if improper process control, easy to cause lead to dissolve a quantity to exceed bid, so the price is * * * * ong. Strengthen porcelain magnesium quality ingredients, high whiteness, high strength, high heat stability and other prominent features, its white like jade, glittering and translucent moist, is all sorts of household ideal products, prices and the bone China. 2, from the flower surface decorative way according to the flower surface features can be divided into glaze colors, glair, under the glaze color and glaze porcelain and some did not add white porcelain, etc. What is a glaze? Glaze material is a kind of energy state, the glaze on the ceramic body, after the kiln, ceramic products can get the surface of a layer of shiny not bibulous, namely water, no glazed pottery and porcelain, after burning surface is rough, lacklustre, such as violet sand earthenware. Glaze colors: on color glaze ceramics is made of ceramic pigment color paper on the glaze or to paint directly on the product surface, then through 700 ℃ ~ 850 ℃ high temperature bake to burn into the product. For roast burning temperature reaches the melting temperature of the glaze, so flower surface can't sink into the glaze, close to the surface of the glaze layer. If touch, product surface has AoTuGan, macroscopic observation rugged. Glair glair pottery and porcelain: baking temperature than color glaze, reached the products glaze melt temperature, ceramic pigment in the glaze melt into glaze, covered by the glaze layer after cooling. Touch products smooth surface such as glass, no obvious AoTuGan. Under the glaze color: under glaze color porcelain is a traditional decorative methods in our country, the products all the splendor in the porcelain on the billet, after glazing high temperature firing at a time. This kind of products like glair, the surface is covered by the glaze layer, shining, smooth surface, no rough feel. Glaze porcelain, the glaze porcelain is adding a kind of high temperature in ceramic glaze color, make the products after firing glaze presents a particular color, such as yellow, blue, pea green color. White porcelain, white porcelain usually refers to without any porcelain enamel, sales of such products in the market in general is not big. Compare adornment ways above, under the glaze color is given priority to with the traditional blue and white and blue and white and exquisite, color is drab, moderate price; Glair colour than under the glaze color is rich, the product is higher, but the process is strict, and the cost is high, the price is high also, glaze color ceramic color is rich, stereo sense is strong, low surface smoothness, easy processing, so the cost is relatively low. More than decoration in different ways, besides its artistic effect is different, the main difference is in the lead, cadmium and other heavy metal element content. Of glair, under the glaze color, and the vast majority of glaze porcelain, white porcelain of lead, cadmium content is very low, and at the time of the ceramic color paper processing glaze color if use inferior paint, or in the flower face design for high lead, cadmium pigments dosage is too large, or roast burning temperature, ventilated condition is not enough, it's easy to cause the dissolubility of lead, cadmium exceeds bid. Source: website administrator