Low carbon steel pipe with ceramic with conventional steel, wear-resistant alloy steel pipe, cast stone and plastic pipe, steel pipe and other rubber has the essential difference.

Ceramic pipe is steel outer and inner corundum. Corundum layer Vickers hardness 1100-1500 (Rockwell hardness of 90-98), the equivalent of tungsten-cobalt hard gold. High wear resistance than carbon steel pipe more than 20 times, it is much more superior than the usual bonding together corundum wheel performance. Now it is still a variety of corundum grinding wheel grinder cut hardened steel main wheel. Ceramic pipe corundum corundum wheel wear layer can be put away. Wear resistant ceramic pipe corundum layer may be formed mainly by a few millimeters thick, a Mohs hardness of 9, second only to diamond and silicon carbide, all oxides, which is the highest hardness. ¯ pipe and the component is only about 20% alumina, most of SiO2, SiO2 Mohs hardness of 7. Rare high chromium wear-resistant alloy tube or a Vickers hardness of about 400 (Rockwell hardness of about 50); lack of corundum hardness third. So wear-resistant alloy steel pipe, cast pipe wear both by composition and organization, but also by the thickness of the ceramic pipe abrasion resistance compared to them, has been a qualitative leap.

Low carbon steel pipe with ceramic is the use of SHS - centrifugal method of manufacturing the ceramic pipe corundum melting point 2045 ℃, corundum layer and the steel layer structure due to process special reasons, the stress field is also special. Ceramic layer at room temperature compressive stress, steel layer subjected to tensile stress, the two opposites, into a balanced whole. Only the temperature rises above 400 ℃, since the thermal expansion coefficient between the two, the new stress field generated by the thermal expansion of the ceramic pipe and the stress field in the presence of the original offset each other, so that both the ceramic layer and the steel layer is free equilibrium. When the temperature rises to 900 ℃ to ceramic-lined steel pipe into the water Ling, repeated immersion times, the composite layer does not crack or crack, showing the common ceramic unparalleled thermal shock resistance. This performance would be useful in engineering construction, because of its outer layer of steel, coupled with the inner temperature is not cracked in the construction of the flanges, the purge port, explosion doors can be welded directly to the welding method can also be used connection, than wear and cast stone pipe, wear resistant steel pipe, rare earth abrasion steel, bi-metal composite pipe, steel pipe, steel rubber pipe in construction can not easily welded or soldered better. Ceramic-lined steel pipe good resistance to mechanical shock resistance, while during transportation, installation and beat two weight bracket bent, not broken off the composite layer.

Low carbon steel tubes are made of ceramics with high wear resistance and resistance to fluid erosion. In the wind pipe, the wear rate of the pipe is the fastest, and the wear resistance of the ceramic lined steel pipe elbow is more than five times higher than that of the steel elbow. In practical application, the ceramic lined steel pipe has been observed and measured 1-2 years after opening the hole. The composite layer has no obvious wear or loss, the size of the unit and the length of the pipe are the same. The weight of the ceramic lined steel pipe is about 1/2 with the weight of the wear-resistant steel pipe or the double metal composite pipe. The construction cost is reduced by 30-40% per meter, and only the cast stone weight steel pipe is used. And rare wear resistant 2/5 around 20% per meter below the cost of the project. The cost of ceramic lined steel pipes is only a small part of stainless steel tubes and nickel titanium pipes when they are corroded or used in high temperature.

Features of Low carbon steel pipe with ceramic

1. Good abrasion resistance
Ceramic composite pipe due to the inner lining of corundum ceramic (A-al2o3), the Mo hardness of up to 9.0 of the equivalent HRC90. Therefore, the metallurgical, electric power, mining, coal and other industries to transport the grinding medium has high wear resistance. The industrial operation confirms that its wear-resisting life is 10 times times or even dozens of times times that of quenched steel.

2. Small Operation resistance
SHS Ceramic Composite pipe Because of the smooth inner surface, and never rust, nor like the seamless steel tube inside the surface has convex spiral. After testing the internal surface roughness and water resistance characteristics of the testing units, the smoothness of the inner surface is superior to any metal pipe, the resistance coefficient is 0.0193, slightly lower than the seamless pipe. Therefore, the tube has the characteristics of small operating resistance and can reduce the operating cost.

3, corrosion resistance, anti-scaling
Because the steel ceramic layer is (A-al2o3), it is a neutral trait. Therefore, with acid and alkali resistance and seawater corrosion, and at the same time with anti-scaling and other characteristics.

4. High temperature resistance and heat-resisting performance
The corundum ceramic (A-al2o3) is a single stable crystalline structure. Therefore, the composite pipe can operate in the -50--700℃ temperature range for a long time. The material linear expansion coefficient is 6-8x10-6/0c, about 1/2 of the steel pipe. The material has good thermal stability.

5. Low construction cost
The ceramic composite pipe is light in weight and suitable for price. than the same inner diameter cast stone pipe weight 50% lighter than the wear-resistant alloy tube weight light 20–30%, and wear-resistant, corrosion-resistant, because of long service life, thereby supporting the hanger costs, removal costs, installation costs and operating costs reduced. Compared with the engineering budget and engineering practice of the Design Institute and Construction Unit, the cost of the pipe project is equal to that of cast stone, and the project cost is about 20% lower than that of wear-resisting alloy pipe.

6. Convenient installation and construction
Because of the light weight of the tube, and good welding performance. Therefore, welding, flange, rapid connection, such as the installation of convenient construction, and can reduce installation costs.

Iv. Other Knowledge
Ceramic steel pipes are essentially different from traditional steel pipes, wear-resistant alloy cast steel pipes, cast stone pipes, steel plastic and steel pipes. The outer layer of the ceramic steel tube is steel, and the inner layer is corundum. The hardness of Vivtorinox corundum is 100-1500 (Rockwell hardness is 90-98), equivalent to tungsten cobalt hard gold. The wear resistance is more than 20 times higher than that of carbon steel pipe, better than that of commonly bonded corundum wheel. Now corundum wheel is still the main grinding wheel of the mill. Corundum layer in ceramic steel tube will wear corundum grinding wheel. The wear resistance of the ceramic steel tube is mainly the inner layer of the corundum layer with a few millimeters thick. Its Moir hardness is 9, second only to the diamond and SIC, and its hardness is the highest in all oxides.


The lining ceramic wear resistant steel pipe is made by SHS high temperature synthesis centrifuge method. The melting point of corundum in the ceramic steel tube is 2045 C. The corundum layer and the steel layer have special structure and stress field because of the technological reasons. At room temperature, the compressive stress of the ceramic layer and the tensile stress of the steel layer, on the contrary, become a balanced whole in two ways. Only when the temperature rises above 400 degrees C, the thermal expansion and the new stress field produced in the original stress field are counterbalanced by the thermal expansion coefficient, which makes the ceramic layer and the steel layer in the free equilibrium state. When the temperature rises to 900 degrees C, the inner lining ceramic wear-resistant steel pipe enters the water and soaked repeatedly. The composite layer does not crack or crack, which shows the unrivalled thermal shock resistance of the common ceramics. This performance is useful in building, because the outer layer is steel, in addition to the heating inner layer does not crack, in the construction, flange, blow gas, explosion-proof door can be welded, also can be welded directly to connect, mostly wear resistant cast stone pipe, wear-resistant cast steel pipe, rare earth wear resistant steel pipe, bimetal composite pipe, steel pipe, steel tube rubber pipe in construction It is not easy to weld or weld more than the chip. The lining ceramic wear-resistant steel pipe has good mechanical impact resistance. The weight of transportation, installation of beats and two supports is bent and deformed, and the composite layer does not fall off.
At present, the practice of dozens of thermal power plants shows that the lining of ceramic lined steel tubes has high wear resistance and strong resistance to fluid erosion. In the first air duct, the elbow wears fastest, and the wear resistance of the lining ceramic wear-resistant steel pipe is more than 5 times higher than that of the thick wall wear-resistant cast steel elbow.


In practical application, after 1-2 years of open observation and measurement, the inner lining ceramic wear resistant steel pipe has no obvious wear or loss. In the same size and unit length pipes, the inner lining ceramic wear resistant steel pipe weight is only about 1/2 of the wear-resistant cast steel tube or the double metal composite pipe, and the cost of each meter is reduced by 30-40% and only cast stone. The weight of tube and rare earth wear-resistant steel pipe is about 2/5, and the cost per meter is reduced by more than 20%. In the corrosive or high temperature areas, the use of ceramic ceramic wear-resistant steel pipe is only a small part of stainless steel tube and nickel titanium tube.
Fluid pipeline transportation is not only used in the power industry, but also in metallurgy, coal, petroleum, chemical industry, building materials, machinery and other industries. When the pipeline is transported with large abrasive materials such as ash, coal, mineral fine powder, Tailings Cement and so on, there is a problem of rapid wear of the pipeline, especially the fast wear of the pipe, and the existence of gas, liquid or solid in the pipeline when the pipeline is strong corrosivity, and the corrosion and rapid destruction of the pipeline. When transporting high temperature materials in pipeline, there are some problems, for example, the price of heat-resistant steel pipe is very expensive and the inner lining ceramic wear-resistant steel pipe market. These problems have been solved.