The ceramic-lined composite carbon steel pipe is manufactured by the high-tech production process – the self-propagating high-temperature clutch synthesis method. The tube is composed of three layers of corundum ceramic, transition layer and steel from inside to outside. The ceramic layer is formed of dense corundum porcelain (AL2O3) at a high temperature above 2200℃, and the transition layer forms a firm bond with the steel pipe.
The composite pipe has overcome the low hardness, poor wear resistance and poor ceramic toughness of the steel pipe due to its high strength, good toughness, good impact resistance, good welding performance, and high hardness, high wear resistance, corrosion resistance and heat resistance of corundum porcelain. specialty. Therefore, the composite pipe has good comprehensive properties such as wear resistance, heat resistance, corrosion resistance, mechanical and thermal shock resistance, and good weldability. It is an ideal wear-resistant and corrosion-resistant pipeline for conveying granular materials, grinding, and corrosive media. Because the pipe has wear resistance, corrosion resistance and heat resistance, it can be widely used in electric power, metallurgy, mining, coal, chemical industry and other industries to transport abrasive granular materials such as sand, stone, coal powder, ash, aluminum liquid and so on. and corrosive medium, it is an ideal anti-corrosion pipeline.
Because the pipe has wear resistance, corrosion resistance and heat resistance, it can be widely used in electric power, metallurgy, mining, coal, chemical industry and other industries to transport abrasive granular materials such as sand, stone, coal powder, ash, aluminum liquid and so on. and corrosive medium, it is an ideal anti-corrosion pipeline.
Features of ceramic lined composite steel pipe products
Good wear resistance
Since the inner lining of the ceramic composite pipe is corundum ceramic (a-AL2O3), the Mohs hardness can reach 9.0, which is equivalent to HRC90 or more. Therefore, it has high wear resistance for abrasive media transported by metallurgy, electric power, mining, coal and other industries. It has been proved by industrial operation that its wear resistance life is ten times or even dozens of times that of hardened steel.
Low running resistance
Because the inner surface of SHS ceramic composite pipe is smooth and never corroded, it does not have convex helixes on the inner surface of seamless steel pipes. The internal surface roughness and water resistance characteristics of the relevant testing units have been tested, and the internal surface smoothness is better than that of any metal pipe, and the clearing resistance coefficient is 0.0193, which is slightly lower than that of seamless pipes. Therefore, the pipe has the characteristics of small running resistance, which can reduce the running cost.
Corrosion resistance, anti-scaling
Since the steel ceramic layer is (a-AL2O3), it is a neutral character. Therefore, it has acid and alkali resistance and seawater corrosion resistance, and at the same time has the characteristics of anti-scaling and so on.
Good temperature resistance and thermal shock resistance
Because of the corundum ceramic (a-AL2O3), it is a single stable crystalline structure. Therefore, the composite pipe can operate normally for a long time in the temperature range of -50–700℃. The linear expansion coefficient of the material is 6-8×10-6/0C, which is about 1/2 of the steel pipe. The material has good thermal stability.
Low engineering cost
Ceramic composite pipes are light in weight and affordable. It is 50% lighter than the cast stone pipe of the same inner diameter; 20-30% lighter than the wear-resistant alloy pipe, and has good wear resistance and corrosion resistance. Because of its long service life, the support and hanger costs, handling costs, installation costs and Operating costs are reduced. According to the comparison between the project budget and the actual project of the relevant design institute and the construction unit, the project cost of the pipe is equivalent to that of cast stone, and compared with the wear-resistant alloy pipe, the project cost is reduced by about 20%.
Easy installation and construction
Because the tube is light in weight and has good weldability. Therefore, welding, flange, quick connection, etc. can be used, which is convenient for construction and installation, and can reduce installation costs.
Application of ceramic lined composite steel pipe
Metallurgical and electric power industries consume a large amount of metal pipes every year to transport pulverized coal, ash, mud, lime gypsum slurry, etc. The use of ceramic composite pipes to replace other pipes has the characteristics of high wear resistance, long service life, convenient installation and significant economic benefits.
Mine: Mine filling, concentrate powder and tailings transportation have serious wear and tear on the pipeline. The service life of the ore powder transportation pipeline used in the past, such as Panzhihua and Daye Mine, is less than one year. Changing to this pipe can increase the service life by about 5 times. .
Coal: Coal preparation and long-distance pipeline coal transportation generally adopt wet transportation, which requires the transportation pipe to be both wear-resistant and corrosion-resi