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China Hunan Yibeinuo New Material Co., Ltd. Company Cases

What is a ceramic hose

Ceramic hose is a kind of composite pipe that combines ceramic and metal organically. Ceramic hose combines the advantages of high hardness of alumina, good chemical inertness and steel, and has excellent wear resistance, corrosion resistance, heat resistance and heat resistance. Impact and anti-mechanical impact performance, used in power plant coal powder, ash, mine powder, tailings, backfill, coal in coal mines, concentrators, coke particles in coking plants, and materials in sintering plants. The service life is 15 higher than that of ordinary steel pipes. It can also be used for the transportation of aluminum liquid and corrosive medium.    Wear resistance: The Al2O3 content in the lining ceramic layer of the ceramic composite steel pipe is more than 90%, and the microhardness is HV1000-1800, so it has extremely high wear resistance, and its wear resistance is ten times higher than that of the quenched medium carbon steel. times, better than tungsten drill carbide. Corrosion resistance: Ceramic is a neutral material with stable chemical properties, excellent corrosion resistance and acid resistance, and can resist various inorganic acids, organic acids, organic solvents, etc., and its corrosion resistance is more than ten times that of stainless steel. Heat resistance: It can work for a long time in the range of -50℃~900℃. Easy to weld: The ceramic-lined composite steel pipe can be connected by welding the outer steel pipe. Convenient transportation and installation: Compared with steel pipes, wear-resistant alloy cast pipes, cast iron pipes and cast stone pipes, ceramic-lined composite steel pipes are relatively light in weight and are easy to transport and install. Ceramic-lined composite steel pipes can be welded, flanged, flexible and fast.  

Do you know the difference between ceramic pump tubes and alloy pump tubes?

Wear-resistant pump pipe is the abbreviation of concrete pump pipe. Because it is called concrete pump pipe, the pump pipe is divided into two types: truck pump pipe and ground pump pipe according to the scope of use. The truck pump pipe includes a booming pipe, hinge elbow, and reducer For pipes and elbows, the main materials on the market are wear-resistant alloy pipes and ceramic pump pipes. Today we will talk about the advantages and disadvantages of the two materials.   Wear-resistant alloy pump tube Wear-resistant alloy pipes are widely used. The wear-resistant pump pipes are welded with alloy steel pipes. After high-temperature quenching treatment, a wear-resistant layer of 2.0mm is formed on the inner wall of the wear-resistant pump pipe. The hardness of the wear-resistant layer reaches HRC60 or more. The 125A flange is inlaid with a wear-resistant sleeve with a hardness of more than 60, which ensures the conveying volume of concrete. It is mainly composed of steel pipes and flanges. Advantage: The production process is relatively simple and the price is relatively low. Shortcoming: 1. The hardness is (HRA77-HRA80), the wear resistance is poor, and increasing the hardness will lead to an increase in cost. 2. It is easy to wear and tear, and the inner wall of the pipeline will become rough after wear, and the connection gap is large, which is prone to material blocking. 3. The density is high, the weight is heavy, the load on the pump arm is large, and the installation and maintenance are inconvenient.   Wear-resistant ceramic pump tube The wear-resistant ceramic pump tube is pasted with alumina ceramics inside the steel tube to prolong the service life of the pump tube. Advantage: 1. The hardness can reach HRA90, second only to diamond, and the service life of the pump tube made of ceramic material is more than 5 times higher than that of the alloy pump tube. 2. The ceramic installation is smooth and the gap is small, ensuring that the material does not block the material when passing through, basically solving the problem of hanging material and blocking the material, and the pipeline is easy to clean. 3. Low density and lightweight. The density of wear-resistant ceramic is generally 3.9g/cm3, which is only half of the alloy material. Under the same specification, the quality of a wear-resistant ceramic pump tube is 40% lighter than that of an alloy pump tube. This not only greatly reduces the difficulty and cost of maintenance and replacement, but also reduces the load on the pump arm. 4. The flanges at both ends are made of super wear-resistant ceramics, which can effectively improve the wear resistance of weak parts.   Shortcoming: The price is slightly more expensive than the ordinary alloy pump tube, and the impact resistance of the ceramic pump tube is relatively weak, so try to avoid the impact of hard objects during use.

What are the influencing factors of wear of material conveying wear-resistant pipes?

Material conveying wear-resistant pipes are the bloodline of industrial production, and ensuring the service life of pipes is a prerequisite for safe and efficient production. The wear of straight pipes is generally much smaller than that of bent pipes. Therefore, the wear of the elbow is mainly considered in the pneumatic conveying. The conveyed materials are abrasive materials such as iron powder. Using an ordinary steel elbow, continuous conveying for 2 hours, the elbow will be worn through.   The main factors of wear caused by material impact or friction on the inner wall of the pipe are as follows: (1) Transport medium: including particle size and shape, concentration, hardness, moisture, crushing rate and adhesion, etc. (2) Pipe material: Including the material and metal structure of the delivery pipe, hardness, inner diameter, surface treatment, etc. (3) Delivery conditions: Including conveying air velocity, temperature and flow state, etc. In actual transportation, the influence of the above factors on wear does not exist singly, but appears comprehensively. Therefore, even if it is the same material, the wear-resistant pipeline-ceramic composite pipe of the same material is used, and the degree of wear is different due to different transportation conditions.   The product series produced by the company include: wear-resistant ceramic pipes, wear-resistant ceramic composite liners, wear-resistant ceramic drum rubber coatings, ceramic steel plate composite liners, hopper silos, integrated equipment lining ceramics, engineering machinery concrete ceramic pump pipes and other products , It is widely used in more than 30 large and medium-sized cities and large and medium-sized enterprises in China, and exported to many countries around the world, and is widely praised.   The wear-resistant ceramic pipes produced by the company make full use of the steel pipe's high strength, good toughness, impact resistance, good welding performance, and the high hardness, high wear resistance, corrosion resistance, and heat resistance of the corundum porcelain, which overcomes the low hardness of the steel pipe. Defects such as poor wear resistance and poor ceramic toughness. Therefore, the composite pipe has good comprehensive properties such as wear resistance, heat resistance, corrosion resistance, mechanical shock resistance and thermal shock resistance, and good weldability. It is an ideal wear resistance and corrosion resistance for conveying particulate materials, grinding, and corrosive media. pipeline.  

How to choose wear-resistant ceramic tubes?

SMD wear-resistant ceramic pipe SMD wear-resistant ceramic pipes are made by sticking alumina ceramic sheets on the inner wall of the pipe with high temperature resistant strong adhesive, and form a firm anti-wear layer after being heated and solidified. The production process is simple and the cost is high. The operating temperature generally cannot exceed 100 degrees, which is not suitable for pipelines. Spot welding clamped wear-resistant ceramic pipe Spot welding clamp-type wear-resistant ceramic pipes are made by using high temperature resistant strong adhesive to paste alumina ceramic sheets with holes in the middle on the inner wall of the pipe, and at the same time, the ceramic is firmly welded to the inner wall of the steel pipe through the small holes with the spot welding process. In order to protect the solder joints, a ceramic cap is screwed on. Each piece of porcelain is not only pressed and inserted into each other, but each piece of porcelain forms a trapezoidal angle, so that the tiles are tightly connected and there is no gap; when the last piece of a circle is tightly embedded, a 360° mechanical freedom is formed between the tiles. Locking force (this technique was used in Chinese bridge construction projects centuries ago). The production process of this kind of product is relatively complicated, the production cycle is long, and the cost is high. One piece wear resistant ceramic pipe One-piece wear-resistant ceramic pipes are also called ceramic-lined composite steel pipes. After the ceramic pipe fittings are fired as a whole, they are glued to the inner wall of the pipe with an adhesive. The pipeline has a smooth inner wall, good sealing performance, and good wear resistance and corrosion resistance. Ceramic steel pipes are fundamentally different from traditional steel pipes, wear-resistant alloy cast steel pipes, cast stone pipes, steel-plastic and steel rubber pipes. The outer layer of ceramic steel pipe is steel pipe, and the inner layer is corundum. The Vickers hardness of the corundum layer is as high as 100-1500 (Rockwell hardness is 90-98), which is equivalent to tungsten-cobalt hard gold. The wear resistance is more than 20 times higher than that of carbon steel pipes. The wear resistance of ceramic steel pipes is mainly based on the inner layer of a few millimeters thick corundum layer. Its Mohs hardness is 9, second only to diamond and silicon carbide. Among all oxides, its The hardness is the highest. Ceramic wear-resistant steel pipe lined with high abrasion resistance and strong fluid erosion resistance. In the primary air duct, the elbow wears the fastest, and the wear resistance of the ceramic lining wear-resistant steel pipe elbow is more than 5 times higher than that of the thick-walled wear-resistant cast steel elbow. Centrifugal casting composite ceramic pipe The centrifugal casting composite ceramic pipe is a composite pipe manufactured by "self-spreading high-temperature synthesis-high-speed centrifugal technology", which forms a uniform, dense and smooth ceramic layer and transition layer at high temperature and high speed.  

Why choose wear-resistant ceramic pipes?

Compared with other wear-resistant materials, wear-resistant ceramic pipes have better wear resistance and corrosion resistance, and the overall weight of wear-resistant ceramic pipes of the same thickness is much lower than that of wear-resistant steel pipes. The joints are welded and welded. Connection methods such as blue or flexible quick joints are convenient for transportation, saving manpower and material resources, and installation is easier and faster. In addition to the standard carbon steel pipe, the outer pipe material of the wear-resistant ceramic pipe can also be made of 316 or 304 stainless steel and other alloy or plastic materials, which can meet the application of different working conditions and make the use more flexible and changeable. In addition to the above advantages, wear-resistant ceramic pipes also have the following characteristics: 1.The running resistance is low, and the wear-resistant ceramic lining is uniform, tight and smooth, which can significantly reduce the pressure loss and prevent the power eddy current. 2.Impact-resistant and wear-resistant ceramics have strong impact resistance, and the spherical ceramic plate is specially designed to weaken this impact, and can withstand the strong impact of large particles. 3.High temperature resistance and aging resistance, choose suitable coated ceramics, which can be used for a long time at 700 degrees Celsius, and the ceramics will not fall off; 4.The service life is more than 10 years. Under the same thickness and the same working conditions, the wear resistance of the wear-resistant ceramic tube is more than 20 times that of the ordinary tube.  

What are the types of wear-resistant ceramic lining plates?

Wear-resistant ceramic liner, also known as alumina liner, alumina wear-resistant liner, alumina ceramic liner, its main component is aluminum oxide, namely aluminum oxide (Al2O3), which is a kind of corrosion-resistant surface of industrial equipment , Excellent non-metallic materials with wear resistance, high temperature resistance and impact resistance.   The wear-resistant ceramic liner is a white rectangular parallelepiped. According to different shapes, it is divided into adhesive liner, welded liner, trapezoidal pipe liner and arc-shaped cyclone liner. 1. The bonding liner is a solid white cuboid, and the common specifications are 150*100, 150*50, 120*80 and other models. Fix the ceramics on the steel plate with glue during construction.   2. There is a round hole in the middle of the welding lining plate, which is fixed by sticking and welding. The iron cap is welded through the middle round hole and the steel plate, and then a porcelain cap is used to protect the welding point. Compared with the adhesive liner, the welded liner has stronger impact resistance and can withstand higher temperatures, which solves the limitation of the temperature influence of the glue.   3. The vertical section of the trapezoidal pipe liner is a trapezoid, and it is a ceramic liner used for small pipe diameter (diameter less than 600mm) pipes. Common specifications are 150*45/40*25, 150*50/47*20, 150*40/37*20 and other models. The trapezoidal liner is self-arching in the pipe into a circle. In addition to the adhesive force of the ceramic glue, there is also pressure between each other, so it is stronger.   4. The arc-shaped cyclone liner is a kind of arc-shaped liner customized according to different cyclone sizes. Each circle requires a set of molds, which is relatively expensive. The arc-shaped plate can completely fit the inner wall of the cyclone vertebral body, and can play a very good abrasion resistance on the inner wall of the cyclone with considerable impact force and serious wear. Its thickness is generally 20mm or 25mm. Wear-resistant ceramic liner has the characteristics of wear resistance, corrosion resistance, high temperature resistance, impact resistance, and convenient construction. It is used as materials for electric power, metallurgy, coal, petroleum, cement, chemical, machinery and other industries (ash slag, coal powder, mineral concentrate) , Tailings, etc.) ideal material for wear-resistant surface of conveying equipment.

How many types of wear-resistant ceramic pipes are there?

Wear-resistant ceramic pipes are widely used in industrial enterprises such as electric power, steel, cement, metallurgy, coal, petroleum, chemical, ports, mining, and construction machinery. When transporting abrasive particles and powders, ordinary pipes wear very quickly, especially the outer arc of the elbow, which is subject to material impact and abrasion, and the service life is much lower than that of straight pipes. When transporting highly corrosive media in the pipeline, attention should also be paid to the selection of anti-wear materials for the pipeline to prevent the pipeline from being quickly damaged due to corrosion, leading to material leakage and affecting enterprise safety production.   When high-temperature materials are transported in the pipeline, the use of high-temperature resistant steel pipes is expensive and other problems. In the ash conveying pipe, the amount of ceramic wear-resistant elbows is increasing, and the price of ceramic wear-resistant elbows varies greatly. Many customers only choose lower-priced products without considering the quality.   The model specifications of wear-resistant ceramic pipe elbows mainly consist of the following parts: 1. The outer steel pipe of the wear-resistant ceramic pipe elbow is mainly composed of 10#, 20# steel, or stainless steel and other materials; 2. Make the corresponding length according to the customer's requirements, and determine whether the pipeline needs to be welded in sections according to the size of the diameter. Generally, it needs to be sectioned if it exceeds 3 meters; 3. The wall thickness of the steel pipe is generally 6-10, and the thickness of the inner ceramic layer is generally 5-30mm; 4. General wear-resistant ceramic pipe elbows are guaranteed to be connected with the same inner diameter, except for customer requirements to ensure the same outer diameter connection; 5. Other models and specifications are produced according to customer requirements.  

What is wear resistant ceramic pipe?

Wear-resistant ceramic pipes mainly play a role in the connection between equipment and equipment, transport materials from one equipment to another, and transport gas, liquid or fluid with solid particles.   The difference between wear-resistant ceramic pipes and ordinary pipes is that the ceramic wear-resistant pipes will be lined with corundum ceramics through techniques such as pasting, welding or isostatic pressing inside the ordinary pipes, as the anti-wear layer of the pipes, and protect the outer steel pipes from materials. The direct wear and corrosion of the pipeline greatly extend the service life of the pipeline. The ceramic lining of the wear-resistant ceramic pipeline can choose alumina ceramics or silicon carbide wear-resistant ceramics. Compared with alumina wear-resistant ceramics, silicon carbide wear-resistant ceramics have better wear resistance, higher hardness and longer service life. Long, and silicon carbide wear-resistant ceramic is a kind of high temperature resistant ceramics, which can run effectively in high temperature environment for a long time, and is suitable for use in high temperature environment.   At present, alumina ceramics are widely used as the lining material for wear-resistant ceramic pipes. From the actual use effect, the wear-resistant ceramics of the same specification have an isostatic pressure integral ceramic pipe and a welded wear-resistant ceramic pipe in order of their service life. Ceramic pipes and paste-type wear-resistant ceramic pipes, although paste-type wear-resistant ceramic pipes have the third highest service life, are still more than ten times that of ordinary steel pipes, and the process is simple and the cost is low. Therefore, the paste-type wear-resistant ceramic pipes are still At present, the most widely used and most cost-effective wear-resistant pipeline.

What kinds of wear-resistant ceramic liners are there?

Ceramic wear-resistant liner is a kind of wear-resistant liner formed by using corundum wear-resistant ceramics as the main material, which is combined with steel plate or rubber through pasting, welding, vulcanization and other methods. According to different materials or shapes, ceramic resistant There are many types of grinding liners.   Wear-resistant ceramic liners can be divided into the following categories according to the combination method: 1. Adhesive wear-resistant liners using adhesive wear-resistant ceramics as the main material are mainly combined with wear-resistant ceramic adhesives and steel plates. The cost-effectiveness is relatively high, the construction period is short, but it is not resistant to high temperatures and is suitable for lower temperatures under working conditions. Used in the environment; 2. The welded wear-resistant lining board using welded wear-resistant ceramics as the main material is mainly used to combine wear-resistant ceramics with steel plates through stud welding nails, which can withstand high temperatures of 300°C and is suitable for use in environments with more complex working conditions; 3. Dovetail type wear-resistant lining board using dovetail type wear-resistant ceramics as the main material. Use dovetail strips to install the ceramics on the steel plate, usually with a certain curvature on the surface, which can disperse the impact force of the material and can be at a temperature below 800°C. Normal use in medium, suitable for use in environments with very harsh working conditions;
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