Ceramic corundum tube

The main chemical component of ceramic corundum tube is Al2O3, which can be classified into ceramic tube, corundum tube, alumina ceramic tube, corundum protective tube, zirconia ceramic tube, silicon carbide ceramic tube, silicon nitride ceramic tube, carbonate aluminum tube, etc. depending on the material.

Ceramic corundum tubes are commonly used in the field of heat treatment industrial furnaces, such as high-temperature vacuum tube electric furnaces, vacuum atmosphere furnaces, tin bath tubes for float glass industry, protective tubes for solar glass, electric furnace wire support tubes, chlorine pipes for aluminum trichloride industry, muffle furnace tubes, etc., with a temperature resistance of up to 1150-1800 ℃. If used for insulation, fixation, and high temperature resistance of electric heating elements between lead out rods, lead sockets, and metal furnace bodies; Mesh belt furnace electric furnace wire support winding; Heating module fixation, insulation, and high temperature resistance; Thermocouple protection tubes, insulators, etc.

Ceramic corundum tubes have excellent characteristics: high refractory temperature, high mechanical strength, and electrical resistivity. Has excellent resistance to chemical corrosion, such as being able to be applied in hydrogen and other reducing atmospheres under high working temperature conditions.

Characteristics of Ceramic Corundum Tube Products

1. Good wear resistance: Due to the inner lining layer of corundum ceramic (a-AL2O3), the Mohs hardness of corundum ceramic wear-resistant pipes can reach 9.0, which is equivalent to HRC90 or above. Therefore, grinding media transported in industries such as metallurgy, power, mining, and coal have high wear resistance. Through industrial operation, it has been confirmed that its wear resistance life is ten or even dozens of times that of quenched steel.

2. Corrosion resistance and anti scaling: Due to the ceramic layer of the steel being (a-AL2O3), it belongs to neutral characteristics. Therefore, it has acid and alkali resistance, seawater corrosion resistance, and also has anti scaling properties.

3. Good temperature resistance and heat-resistant punching performance: Due to the single stable crystalline structure of the corundum ceramic (a-AL2O3). The coefficient of linear expansion of the material is 6-8 × 10-6/0C, which is about half of that of steel pipes.

Alumina ceramic 95~99 ceramic materials have excellent insulation properties, low high-frequency losses, and good high-frequency insulation; Aluminum oxide ceramics are non combustible, rust resistant, sturdy and not easily damaged, with excellent properties that cannot be compared to other organic and metallic materials. The wear resistance of alumina ceramics is the same as that of corundum, reaching a Mohs hardness level of nine, and its wear resistance is comparable to that of superhard alloys. The heat resistance of alumina ceramics is characterized by low thermal expansion coefficient, high mechanical strength, good thermal conductivity, chemical corrosion resistance, and molten metal properties. The products have reached the leading level in China.