In layman's terms, the setter plate is used in the ceramic kiln as a tool for carrying and transporting the fired ceramic embryo.。

　　For the setter plate, the sintering temperature generally reaches above 1200 ℃, and the requirements for the setter plate are relatively high. Domestic materials generally have a series of problems such as low scale, different powder particle size, high impurity content, and poor batch stability. In order to obtain suitable raw materials, Zhongchao Co., Ltd. carried out strict physical and chemical testing and analysis on the raw materials, and repeatedly tested the process comparison test to find out the problems of the main components and impurities control of the materials, so as to manage the raw material suppliers and propose a technical transformation plan. Urge material manufacturers to provide raw materials with stable quality and stable batches according to demand, so as to obtain setter plate products with stable process, good product consistency and great price advantage.

　　Features and Functions

　　The setter plate has excellent characteristics such as high working temperature, good thermal shock stability, small expansion coefficient, high flexural strength, excellent high temperature load softening performance, and long comprehensive service life.

　　It is mainly used in ceramic kilns as a carrier for bearing, heat insulation, and conveying the fired ceramics, which can improve the heat conduction speed of the setter plate, make the fired products evenly heated, effectively reduce energy consumption, speed up the firing speed, and increase the output. It makes the products fired in the same kiln have no color difference and other advantages.

　　use

　　1、Pushing plate, bearing plate, shed plate and saggar for ultra-high temperature electric kiln electric furnace;

　　2、It is used for pollution-free high-temperature sintering of industrial ceramics such as magnetic materials, powder metallurgy, ceramic substrates, and zirconia ceramics;

　　3、Used for sintering of electronic components such as MLCC, LTCC, PTC chip resistor capacitors.

　　Corundum-mullite material has high thermal shock resistance and high temperature strength, and has good chemical stability and wear resistance. therefore. It can be used repeatedly for 100 to 200 times at a higher temperature (1450°C). Especially suitable for sintered magnetic cores, ceramic capacitors and insulating ceramics. At present, most of the domestic capacitor manufacturers use corundum-mullite-based setter plates, among which, the setter plates with higher requirements are mostly expensive. The domestic corundum-mullite sintered plate has a low service life and poor stability, mainly due to its poor thermal shock stability, which is easy to break during use. The thermal stability of the sintered board product is mainly determined by the corundum-mullite matrix. Therefore, it is of great practical significance to carry out research on the thermal shock stability of corundum-mullite composites. The setter product is a laminated setter. The weight of each layer of setter plate plus product is about 1kg, and generally about 10 layers are stacked, so the setter plate can bear a maximum pressure of more than ten kilograms. At the same time, it has to bear the thrust force when moving and the friction force when loading and unloading products, as well as many cycles of cooling and heating, so the use environment is very harsh. Through the selection of high-quality raw materials, it is concluded that, regardless of the interaction of the three factors, alumina micropowder, kaolin and calcination temperature all have effects on thermal shock resistance and creep. Under the experimental conditions, the thermal shock resistance increases with the addition of alumina, and decreases with the increase of sintering temperature. When the kaolin content is 8%, it is the lowest, followed by 9.5%. The creep amount decreases with the addition of alumina micropowder, and the lowest is when the kaolin content is 8%. The creep value is the largest when the calcination temperature is 1580℃. Taking into account the thermal shock resistance and creep of the material, the best effect is achieved when the alumina content is 26%, the kaolin is 6.5%, and the calcination temperature is 1580 °C. There is a certain gap between the corundum-mullite particles and the matrix. And there are some cracks around the particles, which are caused by the mismatch between the thermal expansion coefficient and elastic modulus of the particles and the matrix, resulting in micro-cracks in the product. When the expansion coefficients of the particles and the matrix do not match, the aggregate and matrix are easily separated when heated or cooled. A relief layer is created in the middle, which causes the appearance of micro-cracks. The existence of these microcracks will lead to a decrease in the mechanical properties of the material, but when the material is subjected to thermal shock. It can also play the role of "buffer zone" in the gap between the aggregate and the matrix, which can absorb certain stress. Avoid stress concentration at the crack tip. At the same time, the thermal shock cracks generated in the matrix will first terminate at the gap between the particles and the matrix, which prevents the cracks from expanding. Thus, the thermal shock resistance of the material is improved.