New technology and method of dry pressing for industrial ceramic plate

There are many forming methods of industrial ceramic plates, such as dry pressing, injection, isostatic pressing and so on, each of which has its own characteristics. Here, Kezhong Ceramics Factory will take you to know the dry pressing forming method of industrial ceramic plates, and the following will introduce the forming of zirconia ceramic plates in detail.

Dry pressing molding of industrial ceramic plate is a molding method that uses pressure to press the dry powder blank of industrial ceramic plate into dense body in the model. Dry pressing forming of industrial ceramic plates has been widely used in industrial ceramics and achieved good results. Because the blank formed by dry pressing of industrial ceramic plate has less moisture, high pressure and compact body, it can obtain the green body of industrial ceramic plate with small shrinkage, accurate shape and no need for vigorous drying.

The dry-pressing forming process of industrial ceramic plates is simple, and the production of industrial ceramic plates is large, with few defects, which is convenient for mechanization, so it is quite suitable for forming small-sized industrial ceramic slabs with simple shapes. The following is the preparation method of zirconia ceramic plate by dry pressing.

Zirconia ceramics are white, yellow or gray when containing impurities, and generally contain HfO2, which is not easy to separate. There are three crystalline forms of pure ZrO2 _ 2 at atmospheric pressure. The production of zirconia ceramics requires the preparation of powders with high purity, good dispersibility, ultrafine particles and narrow particle size distribution. There are many methods to prepare zirconia ultrafine powders, and the purification of zirconia mainly includes chlorination and thermal decomposition, alkali metal oxidation decomposition, lime melting, plasma arc method, precipitation method, colloid method, hydrolysis method, spray pyrolysis method and so on.

High temperature resistant ceramic plate

The auxiliary nozzle of the air-jet loom checks whether the temple ring rotates flexibly, whether it is worn, whether there are flying flowers accumulated, whether the interval between the yarn stop pin and the main drum is 0.5 mm, whether the air pipe leaks, whether the centralized oil supply leaks, whether the oil pipe is damaged or bent, whether there are flying flowers accumulated in the control box, and whether the height error of the heald frame is within 2 mm, whether the exhaust pipe of the air filter is unblocked, whether there are flying flowers on the beam pinion, and whether there are yarn ends and sieve holes on the oil filter. Oil the nozzle, the tooth surface of the open gear and the chain, and check whether there is wear on the heald frame and heald frame guide plate. However, it is difficult to use general dry pressing for complex and large-scale products.

In the production of daily-use zirconia ceramic (raw materials: nonmetallic minerals) plates, at present, some flat zirconia ceramic products are formed by dry pressing, which can reduce defects, improve quality, shorten drying time, simplify drying equipment and save chemical formula: CaSO4· 2H2O model can improve labor productivity and facilitate the realization of mechanization and automation.

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