Ceramic wear-resistant elbow is a kind of corundum ceramic lining wear-resistant composite elbow, one kind of ceramic composite steel pipe. The ceramic composite steel pipe is manufactured by a high-tech production process from a high-temperature clutch synthesis method. The tube is composed of corundum ceramic, transition layer and steel from the inside to the outside. The ceramic layer forms dense corundum porcelain (AL2O3) at a high temperature above 2200 °C, and forms a firm bond with the steel tube through the transition layer. The composite pipe has fully exerted the strength, toughness, impact resistance, good welding performance and high hardness, high wear resistance, corrosion resistance and heat resistance of the steel tube, which overcomes the low hardness, poor wear resistance and poor toughness of the steel tube. specialty.
Composite pipe characteristics
1, good wear resistance
The ceramic composite pipe has a Mohs hardness of 9.0 equivalent to HRC90 or more because the inner liner is corundum ceramic (a-AL2O3). Therefore, the grinding media conveyed by the metallurgy, electric power, mining, coal and other industries have high wear resistance. It has been confirmed by industrial operation that its wear life is ten times or even several times that of hardened steel.
2, the running resistance is small
Since the inner surface of the SHS ceramic composite pipe is smooth and never rusted, it does not have a convex spiral on the inner surface of the seamless steel pipe. Tested by the relevant testing unit for the inner surface roughness and water resistance characteristics, the inner surface smoothness is better than any metal pipe, and the clearing resistance coefficient is 0.0193, which is slightly lower than the seamless pipe. Therefore, the tube has the characteristics of small running resistance and can reduce operating costs.
3, corrosion resistance, anti-fouling
Since the steel ceramic layer is (a-AL2O3), it is a neutral trait. Therefore, it has acid and alkali resistance and seawater corrosion resistance, and at the same time has anti-scaling and other characteristics.
4, temperature resistance and heat resistance
Due to 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 °C. The linear expansion coefficient of the material is 6-8×10-6/0C, which is about 1/2 of that of the steel pipe. The material has good thermal stability.
5, the project cost is low
The ceramic composite tube is light in weight and suitable in price. It is 50% lighter than the inner diameter of the cast stone pipe; it is 20-30% lighter than the wear-resistant alloy pipe, and has good wear resistance and corrosion resistance, because of the long service life, thus the cost of the hanger, the handling fee, the installation fee, and Operating costs are reduced. According to the actual project budget and engineering actual comparison between the design institute and the construction unit, the cost of the pipe project is equivalent to that of the cast stone. Compared with the wear-resistant alloy pipe, the project cost is reduced by about 20%.
6, easy to install and construct
Because the tube is light in weight and has good welding performance. Therefore, welding, flange, quick coupling, etc. can be adopted, and the construction and installation are convenient, and the installation cost can be reduced.