What are the characteristics of porcelain lined pipes?
Sep 13,2022
The ceramic lining tube is manufactured using a high-tech production process - self propagating high-temperature clutch synthesis method. The pipe is composed of corundum ceramic, transition layer, and steel layer from the inside to the outside. The ceramic layer forms a dense corundum ceramic (AL2O3) at high temperatures above 2200, and is firmly bonded to the steel pipe through the transition layer. Ceramic lined steel pipe is the full name for ceramic lined pipe.
Due to the full utilization of the toughness, impact resistance, weldability of steel pipes and the high hardness, wear resistance, corrosion resistance, and heat resistance of corundum ceramics, porcelain lined pipes overcome the characteristics of low hardness, poor wear resistance, and poor toughness of ceramics. Therefore, the composite pipe has good wear resistance, heat resistance, corrosion resistance, mechanical shock resistance and thermal shock resistance, as well as good weldability. It is an ideal wear-resistant and corrosion-resistant pipeline for conveying granular materials, grinding and corrosive media. Porcelain lined pipes are wear-resistant, corrosion-resistant, and heat-resistant, and can be widely used in industries such as power, metallurgy, mining, coal, and chemical engineering. They are ideal wear-resistant pipelines for conveying abrasive particle materials such as sand, stone, coal powder, ash, aluminum liquid, and corrosive media.
What are the characteristics of porcelain lined pipes? Let's take a brief look together.
1. Good wear resistance. Due to the fact that the ceramic composite pipe is lined with corundum ceramic (a-AL2O3), the Mohs hardness of the ceramic composite pipe can reach 9.0, which is equivalent to HRC90 or above. Therefore, it has high wear resistance for grinding media transported in industries such as metallurgy, power, mining, and coal. Industrial operation has proven that the wear resistance life of quenched steel is ten or even dozens of times that of quenched steel.
2. Low running resistance. Due to the smooth and non rusting inner surface of SHS ceramic composite pipes, there is no convex spiral on the inner surface of seamless steel pipes. According to the internal surface roughness and water resistance characteristics tests conducted by relevant testing units, its internal surface smoothness is superior to any metal pipe, with a water resistance coefficient of 0.0193, slightly lower than that of seamless pipes. Therefore, the pipeline has the characteristic of low operating resistance, which can reduce operating costs.
3. Corrosion resistance and scaling resistance. Because the steel ceramic layer is (a-AL2O3), it is neutral. Therefore, it has the characteristics of acid and alkali resistance, seawater corrosion resistance, and scale prevention.
4. Good temperature resistance and heat resistance. Corundum ceramics (- al2O3) have a single and stable crystal structure. Therefore, the composite pipe can work normally for a long time within the temperature range of -50-700. The linear expansion coefficient of this material is 6-810-6/0C, which is approximately half of that of steel pipes. This material has good thermal stability.
5. Low engineering cost, lightweight ceramic composite pipe, and suitable price. 50% lighter than cast stone pipes with the same inner diameter; Compared to wear-resistant alloy pipes, it is 20-30% lighter and has good wear and corrosion resistance. Due to its long service life, it reduces the costs of supports and hangers, loading and unloading, installation, and operation. According to the comparison between the engineering budget of the design institute and the construction unit and the actual project, the cost of this pipe project is equivalent to that of cast stone, and compared to wear-resistant alloy pipes, the engineering cost is reduced by about 20%. Easy to install.
The porcelain lined tube is lightweight and has good welding performance. Therefore, welding, flanges, quick connections, etc. It can be adopted to facilitate construction and installation, and reduce installation costs.
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