As an important part of chemical instruments, crucibles are liquids for melting and refining metals, as well as for solid-liquid heating and reaction vessels. It is the basis to ensure the smooth progress of chemical reactions. Historically, crucibles were originally made of clay, and one of the earliest uses of platinum was also to make crucibles. But with the development of preparation technology, crucibles can now be made of any material that can melt or change its contents.​

Because alumina ceramic has many distinctive properties, it can be made into many different products. For example, because of its high mechanical strength, it can be used as a mechanical structural part, and with its high resistivity and electrical insulation properties With good advantages, alumina ceramic has become an ideal material for products such as substrates, tube sockets, and circuit casings.

Due to the relatively large increase in the coefficient of thermal expansion, the thermal shock stability is reduced. It can be used to manufacture insulating ceramic parts for ultra-high frequency and high-power electric vacuum devices, as well as ceramic shells and various ceramic substrates for vacuum capacitors.

External force: A major factor in the wear of alumina ceramics is the strong external force. Generally, it is caused by impact force and pressure during operation. It is worn or broken due to strong external force. This is unfavorable for alumina ceramics. We should try our best to avoid collisions with objects during operation to minimize the damage.

Alumina crucible is also called corundum crucible. The shape is mainly cylindrical, conical, square, etc. The alumina crucible has high purity and contains more than 99% AL2O3. 99% alumina material is used to make high temperature crucibles. It has good chemical resistance and temperature resistance, and can be used for a long time. At 1650°C, it can also be used at temperatures up to 1800°C. But only for short-term use.

Alumina ceramics is an industrial ceramic material that uses alumina as the main material and is manufactured through a specific process. Because alumina ceramics far outperform traditional metal materials in terms of conductivity, high temperature resistance and mechanical strength, they are popular and recognized. Therefore, industrial alumina ceramics are mainly used in thick film integrated circuits.

1. Strong wear resistance. According to research and investigation, the high wear resistance and ultra-high molecular weight of alumina ceramics can reach more than one million, with a high wear resistance index, which is twice the wear resistance of ordinary steel alloys. The most important corrosion resistance of alumina ceramics greatly increases the service life of alumina ceramic tubes.

1. Large hardness Measured by professional research institutes, its Loss hardness is HRA80-90, which is second only to diamond and far exceeds the wear resistance of wear-resistant steel and stainless steel. 2. Good wear resistance After research and determination, its wear resistance is equivalent to 266 times that of manganese steel and 171.5 times that of high-chromium cast iron. According to our customer follow-up survey over the past ten years, under the same working conditions, the service life of the equipment can be extended by at least ten times. 3. Lightweight Its density is 3.5g/cm3, which is only half that of steel, which can greatly reduce the equipment load. Measured by professional research institutes, its Loss hardness is HRA80-90, which is second only to diamond and far exceeds the wear resistance of wear-resistant steel and stainless steel.

1. Wear resistance, corrosion resistance, high temperature resistance and drop resistance. 2. Overall quality assurance, no material adulteration, and enhanced toughness. 3. The product is non-toxic, tasteless, and can be used without cleaning; it is widely used in industries, machinery, electronics, automobiles and other fields. 4. Super-hard ceramic rods are not easy to break during industrial use, high temperature resistance during mixed production, and easy to use.

In order to improve the accuracy of the product, some alumina ceramic materials need to be further processed after the sintering process is completed, so as to achieve a higher surface finish. But alumina ceramics is not an ordinary material after all, how can its finishing treatment be better?