Sapphire tube manufacturer shares the advantages of sapphire ceramic wear-resistant tubes

Corundum ceramic wear-resistant pipes, also known as corundum ceramic composite pipes, are fundamentally different from traditional steel pipes, wear-resistant alloy cast pipes, cast stone pipes, steel, and steel rubber pipes. The outer layer of the ceramic steel pipe is a steel pipe, and the inner layer is corundum. The Vickers hardness of the corundum layer is as high as 100-1500 (Rockwell hardness 90-98), equivalent to tungsten cobalt hard gold. The wear resistance is more than 20 times higher than that of carbon steel pipes, and the performance is much better than that of usually bonded corundum grinding wheels. Corundum pipe The manufacturer stated that currently, corundum grinding wheels are still the main grinding wheels for various grinding machines to sharpen quenched steel. The corundum layer in ceramic steel pipes will wear down corundum grinding wheels. The wear resistance mainly depends on the inner corundum layer with a thickness of a few millimeters. Its Mohs hardness is 9, second only to diamond and silicon carbide, and its hardness is the highest among all oxides.

　　1. Good wear resistance

　　 Corundum pipe The manufacturer claims that because the inner lining of the corundum wear-resistant ceramic pipe is corundum wear-resistant ceramic (a-AL2O3), the Mohs hardness can reach 9.0, equivalent to HRC90 or higher. Therefore, it has high wear resistance for abrasive media transported in the metallurgical, power, mining, and coal industries. Industrial operation proves that its wear-resistant life is ten times or even dozens of times that of quenched steel.

　　2. Low operating resistance

　　The inner surface of the corundum wear-resistant ceramic pipe is smooth, never rusts, and the seamless steel pipe has no convex spiral. According to the detection of surface roughness and water resistance characteristics by relevant testing units, the smoothness of the inner surface is superior to any metal pipe, and the water resistance coefficient is 0.0193, slightly lower than that of seamless pipes.

　　3. Corrosion resistance and antifouling

　 Corundum pipe The manufacturer stated that because the ceramic layer of this steel is (a-AL2O3), it is neutral. Therefore, it has the characteristics of acid and alkali resistance, seawater corrosion resistance, and antifouling.

　　4. Good temperature resistance and heat resistance.

　　Corundum ceramic (-al2o 3) is a single and stable crystal structure. Therefore, the composite pipe can operate normally for a long time in the temperature range of -50-700. The linear expansion coefficient of this material is 6-8 10-6/0c, which is about 1/2 of that of steel pipes.

　　5. Low engineering cost

　 Light weight and reasonable price. 50% lighter than cast stone pipes with the same inner diameter; 20-30% lighter than wear-resistant alloy pipes.

　　6. Convenient installation and construction

　　Because it is lightweight and has good weldability. Therefore, welding, flange, and quick connection methods can be used, and the construction and installation are convenient.

　 The above are the advantages of corundum ceramic wear-resistant pipes. In fact, Corundum pipe It also has the characteristics of high temperature resistance, corrosion resistance, and high strength, so it is widely used. Corundum pipe It is used in enterprises and homes.

　　 Corundum pipe Used in casting steel sliding gates, smelting rare metals, special alloys, high-purity metals, glass, painting, making crucibles, glass lasers; various high-temperature furnaces, such as refractory materials, ceramics, blast furnace linings (walls, pipes); as well as chemical containers, spark plugs, and anti-oxidation coatings. Low-silicon sintered corundum brick linings with less than 0.5% silicon dioxide are used in special carbon black, boron chemicals, fertilizers, synthetic ammonia gasifiers, and reactors.