Characteristics of chemical stoneware industry and selection skills of ceramics

Ceramics are common decorative materials in decoration. Decorating the room with ceramic products is not only beautiful and clean, but also convenient and relaxed. Among them, the ceramic products of chemical brands are very popular with everyone. Everyone is familiar with ceramic products but not with the knowledge of ceramic industry. What are the characteristics of chemical stoneware industry? Let's take a look with Bian Xiao.

1. What are the industry characteristics of chemical stoneware?

1. Chemical stoneware is used to make ceramics for acid-resistant parts in chemical stoneware. According to varieties, there are pumps, blowers, printing machines, valves, containers, towers, fillers, acid-resistant and temperature-resistant bricks, etc. Chemical stoneware is made of plastic clay, feldspar, flint clay or bauxite. After crushing, mud refining, slicing, manual tamping, blank printing, pouring and other processes. And then baked at high temperature. Excellent corrosion resistance (except hydrofluoric acid and concentrated hot alkali). Among all inorganic acids and organic acids, its corrosion resistance, wear resistance and non-pollution to media are far beyond the reach of acid-resistant stainless steel.

2. Widely used in petrochemical, chemical fertilizer, pharmaceutical, food, papermaking, smelting, chemical fiber and other industries. The working temperature range is-15 ~ 100℃, and the temperature difference should not exceed 50℃. Main disadvantages: fragile, low mechanical strength, poor cold and heat resistance. In recent years, special chemical stoneware such as silicon nitride, silicon carbide, silicon oxide and alumina have appeared. However, chemical stoneware made of ordinary silicate minerals such as clay still has the advantages of low price and easy to be made into large size.

3. China attaches great importance to the development and application of chemical stoneware. Start early, invest heavily and involve many departments. In terms of chemical stoneware, almost all chemical stoneware materials are developed and produced in China. At present, a relatively complete research and development system has been formed, and the theoretical research and experimental level of high-tech ceramics such as ceramic pumps and valves are at the leading level in the world. In recent years, China has made special ceramics the focus of developing high-tech industries, and increased investment in application foundation and industrialization.

Second, the chemical stoneware-ceramics purchase skills

1. Look at the appearance: Generally, a good ceramic has a balanced surface color, good flatness and regular ceramic periphery. Secondly, the pattern on its surface is complete, there will be no color difference and deformation, and no obvious impurities can be seen.

2. Listen to the sound: When buying ceramics, tap the surface with a hard object. The crisper the sound, the higher the porcelain degree and the better the quality. Secondly, you can hold a corner of the ceramic vertically with your fingers, and then tap the middle and lower part of the ceramic with your index finger. The sound is good.

3. Drip experiment: You can drop water or tea on the back of the ceramic to observe the seepage velocity after water dispersion. Generally speaking, the slower it absorbs water, the greater its density. Conversely, the faster the water absorption, the smaller the density. Therefore, choose high-density ceramics when purchasing, and the service life of this quality ceramics will be longer.

4. Measurement: you can measure the size of ceramics when you buy it. The higher the dimensional accuracy, the better the paving effect. Because good quality ceramics are not only easy to construct, but also can effectively save working hours and accessories. So use a ruler to measure the size and periphery of each ceramic, and at the same time measure its diagonal to see if it is equal.

5. Weighing: You can also distinguish the quality of ceramics from the weight. First, prepare two pieces of ceramics with the same volume. The heavier the ceramics, the better the quality. Secondly, if it is the same weight of ceramics, the smaller the volume, the better.

The above contents are related knowledge of chemical stoneware. Now ceramics are widely used for decoration. This product has beautiful appearance, strong wear resistance and no pollution.