Wear-resistant pipes mainly include wear-resistant elbows, straight pipes, tees, large and small heads, Fiona Fang joints, reducing pipes and other structural parts, which are mainly used for conveying pneumatic, pumping slurry and other materials. Because the conveying medium has the characteristics of high hardness, fast flow rate and large flow rate, it can effectively reduce the speed at which the pipeline is gradually worn through due to the impact, wear and corrosion of the conveying medium on the pipe wall for a long time. Wear-resistant pipes have been widely used in electric power, metallurgy, coal, petroleum, chemical industry, building materials, machinery and other industries, and are developing at a high speed. When abrasives (such as ash, pulverized coal, concentrate, tailings, cement, etc. ) in the wear-resistant pipeline, there is a problem that the wear-resistant pipeline wears quickly, especially the elbow wears faster. When transporting corrosive gas, liquid or solid in wear-resistant pipeline, there is a problem that the wear-resistant pipeline is corroded and quickly destroyed. When conveying materials with high temperature by wear-resistant pipes, there is a problem that the price of using heat-resistant steel pipes is very expensive. These problems have been solved after the wear-resistant pipeline went on the market. Wear-resistant pipelines are widely used to transport severely worn mine filling materials, concentrates and tailings, and wear-resistant pipelines such as powder feeding, slag removal and ash conveying in coal-fired thermal power plants are also very suitable. Wear-resistant pipeline is an ideal wear-resistant pipeline for conveying strong corrosive solids and liquids such as acid, alkali, salt and abrasion. Wear-resistant pipe is very safe and reliable in high temperature corrosion, high temperature wear or high temperature melting.
At present, enterprises have a high degree of modernization, generally assembly line production, which shows the advantages of wear-resistant pipes. Not only is it safe to use and long in service life, but it also saves a lot of expenses for enterprises. Now many factories have completed the work of replacing ordinary pipes with wear-resistant pipes.
Wear-resistant ceramic composite pipe quickly occupied the market, not only with high quality and good performance, but also with higher cost performance than other wear-resistant, corrosion-resistant and heat-resistant pipes. In terms of wear-resistant pipes with the same specifications and unit length, the weight of wear-resistant ceramic composite pipe is only about half of that of wear-resistant alloy cast steel pipe, and the project cost per meter is reduced by 20%-30%; Only one third of the weight of the cast stone pipe, reducing the project cost by 5%-10% per meter; The price of wear-resistant pipes used in corrosion or high temperature is only a fraction of that of stainless steel pipes and nickel-titanium pipes.
◆ The lining is made of corundum ceramics (a-AL2O3), the Mohs hardness can reach 9.0, which is equivalent to more than HRC90, and the wear life is ten times or even dozens of times that of hardened steel.
◆ It can run 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 about12 of that of steel pipe, and it has good thermal stability.
◆ The smoothness of the inner surface is better than that of any metal pipeline, with a resistance coefficient of 0.0 193, low running resistance and low running cost.
◆ The ceramic layer is (a-AL2O3), which is neutral and has the characteristics of acid and alkali resistance, seawater corrosion resistance and scale prevention.
◆ The pipe has light weight and good welding performance. It can be welded, flanged and quickly connected, which is convenient for construction and installation and can reduce the installation cost.
◆ Comparing the engineering budget and engineering practice of relevant design institutes and construction units, the engineering cost of this pipe is equivalent to that of cast stone, which is about 20% lower than that of wear-resistant alloy pipe.