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

What is a cermet-lined composite pipe?"Metal-ceramic-lined composite pipe" Many buyers feel a little strange when they see the name of this product. Why are there metal and ceramic? What exactly is a cermet-lined composite pipe?   The metal-ceramic-lined composite pipe is the ceramic pipe we are familiar with, because the outer steel pipe is made of metal (ordinary steel pipe or stainless steel pipe), and then lined with ceramics, so sometimes it is called a metal-ceramic-lined composite pipe. That is, take the material directly in the title name. Among them, there are also two types of lining ceramics. Although they are all alumina ceramics, the production process is different. One is a ceramic patch, and the other is self-propagating ceramics. The choice of lining ceramics is determined according to working conditions, conveying medium, expected service life, etc. Simply put, ceramic patches are more wear-resistant and have a longer service life, but are not resistant to corrosion and high temperature (due to glue), Self-propagating ceramics are not as wear-resistant as ceramic patches, but they are resistant to corrosion and high temperature.

According to different processes, ceramic lining plates can be divided into three types: adhesive ceramic lining plates, welded ceramic lining plates, and dovetail ceramic slot-type lining plates. Today, let's find out what kinds of wear-resistant ceramic lining plates can be classified according to different ceramic materials.   1. Ceramic rubber two in one composite lining plate, ceramic-rubber two-in-one composite lining plate adopts a cold vulcanization process, vulcanizing high-purity alumina wear-resistant ceramics on top of high-grade rubber with better material, forming impact resistance and wear resistance. The ceramic-rubber composite liner can be used in equipment with relatively high impact force, but because the rubber is not strong in high-temperature resistance, even if high-grade rubber with better material is used, try to ensure that the operating temperature is within 200 ℃.    2. Ceramic steel two-in-one composite lining plate, ceramic steel two-in-one composite lining plate is to install wear-resistant ceramics on various metal materials by sticking or welding + sticking, and then welding or bolting the ceramic steel two-in-one composite lining board. The one-in-one composite liner is installed in the equipment that needs anti-wear. Compared with installing the wear-resistant ceramic sheet directly in the equipment, the ceramic-steel two-in-one composite liner is more convenient to install and disassemble, and it is more convenient to replace. Serious parts can use ceramic steel two-in-one composite lining, which can be removed and replaced regularly. The construction is simple and fast, saving a lot of time and cost.   3. Steel-based cast ceramic liner, steel-based cast ceramic liner, also known as a fused ceramic liner, is different from the ceramic steel two-in-one composite liner in that the steel-based cast ceramic liner is an arrangement of wear-resistant ceramics in a certain way. Melted into steel, it not only retains the high wear resistance of ceramics but also retains the toughness of steel. Therefore, the wear resistance of steel-based cast ceramic linings is usually stronger than that of metal wear-resistant plates, and slightly lower than that of ceramic-steel two-in-one composites. Liner. However, because the toughness of steel is retained, the impact resistance and fracture resistance of steel-based cast ceramic linings are stronger than those of steel two-in-one composite linings, and the temperature resistance is higher than that of ceramic-rubber two-in-one composite linings. It is used in equipment with high impact in a high-temperature environment. http://www.ybnceramic.com/alumina-ceramic-liner/impact-resistant-linings.html  

Most ash conveying pipelines use pneumatic conveying, which has the characteristics of high airflow pressure, fast flow rate, and long conveying time. There are often hard particles in the conveyed materials, which seriously wear the ash conveying pipeline. Abrasion of the ash conveying pipeline will cause serious pulverized coal leakage, pollute the environment, and cause potential safety hazards and waste materials.    There are three common solutions: 1. Reducing the air pressure during ash conveying can reduce the material flow rate while saving energy, thereby reducing pipe wear. This method reduces the efficiency of ash conveying in the pipeline, and the effect is not ideal. 2. Make a backpack patch structure in the parts where the ash conveying pipeline has been worn or may be worn, and pour cement or wear-resistant materials into the backpack. The operation is simple and the cost is low, but it can only partially solve the problem and cannot fundamentally solve the problem. 3. Improve and optimize the wear resistance of the pipeline itself. The lining of the pneumatic conveying pipeline with alumina ceramics is an effective method to solve the wear of the ash conveying pipeline. Corundum is the main component of wear-resistant ceramics. Its hardness can reach above HRA88, and the wear resistance is far super metal. The service life is 7-10 times that of metal pipes.

The wear resistance of wear-resistant ceramic linings is widely recognized, and adhesive wear-resistant ceramic linings are widely used due to the advantages of easy installation, low cost, and saving maintenance time. However, in power plants and metallurgical plants, the temperature of equipment is generally high, and conventional wear-resistant ceramic adhesives are not resistant to high temperatures. Once operated under ultra-high temperature for a long time, the adhesive is easily aged and causes ceramics to fall off.    High temperature wear-resistant ceramic adhesive is AB double-group epoxy adhesive; white paste, can be cured at room temperature, heating and curing can obtain better bonding strength; long-term temperature resistance after curing 250 ° C, high-temperature resistance 280 ° C, aging resistance , Corrosion resistance, high strength, good toughness, strong adhesion, optimize the construction process and reduce construction costs. Commonly used for self-adhesion and mutual adhesion of metals, cement, ceramics and other materials, especially suitable for sticking wear-resistant ceramic sheets (linings) on the surface of equipment below 250°C. Such as the pasting of wear-resistant ceramic sheets at the outlet pipe of coal mills in thermal power plant, inner shell of powder discharger, dust removal system in steel plant, elbow of air duct, etc.

The wear resistance of the wear-resistant ceramic tube mainly depends on the wear resistance of the wear-resistant ceramic lining, and the wear resistance refers to the ability of the material to resist mechanical wear, which is mainly determined by the hardness, strength, and roughness of the material.   1. Hardness: The hardness of the material reflects the ability of the material to resist the material being pressed into the surface. The higher the hardness, the shallower the depth of the material intrusion, the smaller the volume of wear, and the higher the wear resistance. The alumina content of wear-resistant ceramics exceeds 92%, and the hardness reaches above HRA85, which is the basis for wear-resistant wear-resistant ceramic pipes.   2. Strength: With high strength, it can provide good support for resisting wear and give full play to the ability of anti-wear hard to resist wear, that is to say, strength and hardness complement each other. The flexural strength of wear-resistant ceramics reaches 300-450Mpa, and the compressive strength is as high as 1200-2500Mpa, which further strengthens the wear resistance of wear-resistant ceramic tubes.    3. Roughness: The smaller the roughness value, the higher the fatigue and wear resistance. The surface roughness of the ceramic has a certain relationship with the thickness of the powder particles under certain conditions. The wear-resistant ceramics have been ground and polished many times, and they are supported by high-quality fine powder. The smoothness is very high, which adds a third guarantee for the wear resistance of the wear-resistant ceramic tube.   4. High hardness, high strength, and smooth surface are the reasons for the wear resistance of wear-resistant ceramic tubes. On this basis, there are also integrated molding, staggered joints, etc. to reduce the erosion of wear-resistant ceramic tubes by gas and powder, so that The wear resistance of wear-resistant ceramic tubes has reached a new level.  

Wear-resistant ceramic pipes are different from ordinary steel pipes. The inner wall of wear-resistant ceramic pipes has wear-resistant ceramics as a wear-resistant layer, and wear-resistant ceramic adhesives are used to connect the wear-resistant layer and the steel wall. Steel pipes are different. Because welding will release a lot of heat in a short time and generate local high temperatures, the edge of ordinary steel pipe can usually be welded directly, but if the wear-resistant ceramic pipe is directly welded, the internal porcelain will be blackened, and part of it will be melted due to the high temperature released. Viscose causes the internal wear-resistant ceramic to peel off.    How to weld wear-resistant ceramic pipes? Under normal circumstances, before welding wear-resistant ceramic pipes, a welding space should be reserved when applying porcelain, and then normal welding is performed. After the welding is completed, wait for the pipes to cool down, and then clean up the welding slag and paste the remaining parts of the pipes.

The ceramic rubber lining plate is a composite wear-resistant ceramic-rubber composite plate of ceramic rubber, which adopts an advanced thermal vulcanization process to vulcanize a square or hemispherical wear-resistant ceramic lining and rubber together. It combines the advantages of high hardness of ceramics and high cushioning and anti-fatigue properties of rubber, and can well solve the problem of equipment wear resistance in the process of conveying bulk materials. The addition of rubber not only makes the composite board have good anti-wear and anti-corrosion effects but also can prevent production stoppage and reduce noise caused by material accumulation.    1. Impact resistance: Alumina wear-resistant ceramic lining rubber has good cushioning performance, which can effectively buffer the impact caused by ores falling from a high altitude, while the wear-resistant ceramic lining plate is resistant to wear because the main raw material of the product is alumina. performance, but insufficient toughness, wear-resistant ceramic rubber composite plate must be selected when the impact reaches a certain level   2. Convenient construction: there is no gap after the lining is installed. The rubber composite lining can be twisted and cut, suitable for installing various special-shaped equipment   3. No sticking and no blocking: Due to the high strength and corrosion resistance of ceramics, the phenomenon of equipment sticking and blocking is effectively solved. The traditional nylon board is often stained, which affects the work efficiency   4. The ceramic rubber composite plate has strong wear resistance, impact resistance, and corrosion resistance.   5. The density of ceramic rubber composite plates is lower than that of steel plates, and their weight is light. Because of its high wear resistance, it does not need to be replaced frequently, which saves a lot of time and cost for enterprises.   This product has both the wear resistance of ceramics and the impact resistance of rubber. It is suitable for anti-wear of material conveying system equipment at room temperature. It can withstand a certain impact without sticking and blocking materials.  

Special ceramics refers to ceramics with special mechanical, physical, or chemical properties, which are used in various modern industries and cutting-edge science and technology. The raw materials used and the required production technology have been greatly different and developed from ordinary ceramics. The country calls it "fine ceramics", and recently our country's material experts agreed that it is called "advanced ceramics". Special ceramics can be subdivided into structural ceramics, functional ceramics, and tool ceramics according to their performance characteristics and uses.    Different raw materials: In terms of raw materials, it breaks through the boundaries of traditional ceramics with clay as the main raw material. Special ceramics generally use oxides, nitrides, borides, carbides, etc. as the main raw materials.   The composition is different. The composition of traditional ceramics is determined by the composition of clay, so ceramics from different origins and kilns have different textures. Since the raw materials of special ceramics are pure compounds, the ingredients are determined by artificial proportions, and their properties are good and bad. The purity and craftsmanship of the raw materials are not affected by the origin.   Different structures: traditional ceramics have many impurities and pores, while special ceramics have excellent properties in terms of hardness, strength, corrosion, and wear.   The production process is different: it breaks through the boundaries of traditional ceramics and kilns as the main production methods and widely adopts vacuum sintering, hot pressing, isostatic pressing, and other methods.   Different properties: traditional ceramics are mainly based on life, and special ceramics have different special properties and functions, such as high strength, high hardness, corrosion resistance, electrical conductivity, insulation, as well as in magnetism, electricity, light, sound, biological engineering, etc. It has special functions so it has been widely used in high-temperature, machinery, electronics, aerospace, and medical engineering.  

As we all know, the recent oil price has been soaring. The reason why the oil price is soaring is mainly due to changes in market industry factors. The skyrocketing oil price also drives the cost of other industries to increase. The price of our wear-resistant ceramic series products is also the same. The price of steel keeps rising, the cost of steel purchased by manufacturers is also rising, and the price of our products also rises slightly. Yibeinuo New Materials is a factory specializing in the production of wear-resistant ceramics. The price of steel has had its supply channels for many years. No matter how the price of steel rises, we will serve customers with fair and reasonable prices, and will never deliberately drive up prices.   As a manufacturer, we give the direct ex-factory price. If there is a need to purchase wear-resistant ceramic series products, it is recommended to buy them early.    

Alumina wear-resistant ceramic sheets are currently in demand in the market, and everyone is more concerned about the service life of alumina wear-resistant ceramic sheets. Generally, how long can the ceramic wear-resistant sheet of this material be used? Today I will introduce it to you.   To understand the service life of alumina wear-resistant ceramic sheets, we must first understand the wear mechanism. The wear of alumina wear-resistant ceramic sheets can be roughly divided into cutting wear, fatigue wear, abrasive wear, Impact wear, etc. Due to the different working principles of each type of wear, the wear mechanism of ceramic sheets is also very different. In practical applications or experiments, they are often not isolated, but interconnected ties, and interact with each other.   The service life of alumina wear-resistant ceramic sheets is not only related to its quality, but also external factors, mainly including the size of medium particles, hardness, friction mode, environment, load, flushing speed, temperature, and time.   Generally speaking, the smaller the particles, the lower the concentration, the lower the scouring speed, the smaller the scouring angle, and the longer the service life of the alumina wear-resistant ceramic sheet. Usually in the network pipe of the slag micro powder production line, the surface area of the micro powder is 420~450m2/kg, the concentration is 350a/Nm3, the speed is 28~30m/s, and the flushing angle is 30, the 20mm wear-resistant ceramic sheet can be used for 8~10 years. Raw and clinker grinding materials are easier to grind than slag, and the service life of alumina wear-resistant ceramic sheets with the same thickness can reach more than 10 years.