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

Bulletproof ceramics have become a new star in the bulletproof industry. Its high strength, hardness, and lower density than metal make it a popular bulletproof material. Ceramic bulletproof sheets are also called ceramic bulletproof plates or ceramic bulletproof inserts. The main types are silicon carbide ceramics, boron nitride ceramics, and alumina ceramics. Today we will learn about alumina bulletproof ceramics.   Alumina ceramic bulletproof sheets are inserted in high-strength and high-modulus fiber composite panels. Its high specific stiffness, high specific strength, and chemical inertness in many environments make it almost impossible to plastic deformation. When the ceramic layer collides, the ceramic layer shatters or cracks and diffuses around the impact point to consume most of the energy of the projectile. Then the high-modulus fiber composite plate further consumes the remaining energy of the projectile, and the warhead will be due to its high strength. And hardness characteristics and passivation or even broken, to achieve the purpose of bulletproof.   From the perspective of material, principle, and target test, the application of alumina ceramic bulletproof sheet in armor system is very attractive, and it has become a protective armor widely used in body armor, vehicles, aircraft, and other equipment.

The two commonly used methods for installing ceramic linings in wear-resistant ceramic pipes are direct paste type and stud welding type, both of which can improve the service life of the pipe and protect the inner wall of the pipe steel from the impact wear and corrosion of the material. , but the two are different in cost, process, and use effect. Let's take a look at the advantages and disadvantages of pasted ceramic linings and welded ceramic linings in wear-resistant ceramic pipes.   The advantages of the paste-type wear-resistant ceramic lining are that the construction cost is relatively low, the process is relatively simple, and it can be installed in small pipes with a diameter of about 80mm. Even equipment with a slightly more complex internal structure can also install paste-type wear-resistant ceramics; The disadvantage of the paste-type wear-resistant ceramic lining is that the connection between the ceramic and the equipment mainly depends on the ceramic adhesive. The temperature exceeds 200°C, and the ceramic may fall off when the material is impacted. Therefore, the process of directly pasting the ceramic sheet is not suitable for application at high temperatures. and impacted areas.      The advantage of the welded wear-resistant ceramic lining is that it is fixed by a combination of stud welding studs and inorganic adhesives, which can run at a high temperature of 600 ° C for a long time. Because the fixing is more firm, it can be used in high-speed machines and other moving parts. The wear resistance and impact resistance are better when used in equipment or parts that are subjected to greater impact; the disadvantage of welded wear-resistant ceramic linings is that the construction cost is relatively high, the process is more complicated, the labor cost is higher, and welding is required. equipment, cannot be used in small pipes.   The adhesive type wear-resistant ceramic and the welding type wear-resistant ceramic lining have their advantages and disadvantages, which need to be selected according to the actual situation, but the wear-resistant ceramic adhesive used needs to be carefully selected, because the ceramic is difficult to combine with other materials, if the ceramic is bonded If the agent is not selected properly, the ceramic may fall off because the connection is not tight, resulting in bad influence.  

Ceramic-lined flexible hoses are very suitable for equipment with high mobility requirements, such as pump hoses and equipment that requires frequent replacement of conventional rubber hoses, expansion joints, or bellows connections to transport highly aggressive materials. Ceramic rubber hoses can also be used to isolate mechanical vibrations or connect non-fixed equipment.    The ceramic rubber hose has the following characteristics: 1、The ceramic lining of the ceramic rubber hose is 12 times more wear-resistant than stainless steel; The ceramic rubber hose is very impact-resistant - it is difficult to damage the ceramic sheet by the direct impact of the material; 2、Ceramic rubber hose is very flexible - its bend radius is approximately 12 times the inner diameter of a normal hose 3、Ceramic rubber hose is very corrosion resistant - compatible with most chemicals in slurries 4、The ceramic rubber hose has a variety of connection methods, and the installation is very convenient;   Ceramic rubber hose can support customization. To achieve a better use effect, it is recommended that the length of the ceramic rubber hose can reach more than 650mm, which can ensure better flexibility.  

In addition to the high wear and tear of the top discharge tank of the blast furnace in the steel mill, the coke and auxiliary materials falling from the top will also carry high temperatures and cause a strong impact. Most steel mills use manganese steel lining plates, which are seriously worn and need to be replaced frequently.    In addition, to wear resistance, the wear-resistant lining plate of the feeding tank also needs to have strong impact resistance and high-temperature resistance. The high temperature and impact-resistant ceramic lining plate of the blast furnace blanking tank of the steel mill can completely solve this problem.   A certain proportion of zirconia and other materials are added to the impact-resistant wear-resistant ceramic lining plate of the blast furnace blanking tank of the steel mill to increase the impact resistance of the ceramics. The unique spherical convex design can further buffer and reduce the impact force.   The main material of the wear-resistant ceramic liner is alumina, which is calcined at a high temperature of 1700 ° C and has excellent high-temperature resistance. In order to avoid the influence of high temperature on the ceramic adhesive, we use stud welding to fix, install the ceramic on the steel plate, and then install it on the equipment by welding or countersunk head bolts. The installation is simple and can be installed at 250 ° C Long-term operation at high temperature ensures that the ceramic does not fall off.

The powder separator is an important part of the production system of a chemical plant, and its stability is directly related to the operation of the entire production line. We found that the feeding chute of the powder separator often has problems with material blockage and wear. If the situation is serious, it needs to be cleaned for a week. Therefore, it is urgent to deal with the blockage and wear of the feeding chute.   The greater the hardness of the material in the powder separator, the more wear and tear the feeding chute. Over time, the chute is worn and damaged, and it needs to be shut down for maintenance, which not only wastes a lot of manpower and material resources but also affects the entire production operation. Wear-resistant Ceramic lining can effectively solve this problem.    The wear-resistant ceramic lining is a corundum ceramic sintered at a high temperature of 1700 degrees after dry pressing and forming with alumina as the main body, adding a calcining agent. It has the characteristics of high wear resistance, heat resistance, and corrosion resistance. The ceramic is pasted on the surface of the equipment as a protective layer of the machine to avoid wear and tear. The ceramic liner is easy to install and has a smooth surface, which is suitable for dealing with material blockage and wear problems. It greatly reduces downtime and maintenance time and improves the efficiency of the entire production.

The two most commonly used methods for installing ceramic linings in wear-resistant ceramic pipes are direct pasting and stud welding, both of which can improve the service life of the pipe and protect the inner wall steel from the direct impact of wear and corrosion of the material. , but the two are different in cost, process, and use effect. Let's take a look at the advantages and disadvantages of the two processes of paste-type ceramic lining and welding-type ceramic lining.   The advantages of the paste-type wear-resistant ceramic lining are that the construction cost is relatively low, the process is relatively simple, and it can be installed in small pipes with a diameter of about 80mm. Even equipment with a slightly more complex internal structure can also install paste-type wear-resistant ceramics; The disadvantage of the paste-type wear-resistant ceramic lining is that the connection between the ceramic and the equipment mainly depends on the ceramic adhesive. and impacted areas.    The advantage of the welded wear-resistant ceramic lining is that it is fixed by a combination of stud welding studs and inorganic adhesives, which can operate normally at a high temperature of about 600 degrees Celsius for a long time. The wear resistance and impact resistance are relatively better when used in equipment or parts that are subject to greater impact, such as parts and components; the disadvantage of welded wear-resistant ceramic linings is that the construction cost is relatively high, the process is more complicated, and the labor cost is higher. , The size of the tiles is generally more than 40mm, and welding equipment is required, which cannot be used in small pipes.   The adhesive type wear-resistant ceramic lining and the welding type wear-resistant ceramic lining have their advantages and disadvantages, which need to be selected according to the actual situation.  

After the concrete pump pipe is used, it needs to be cleaned in time. The common cleaning methods include water washing and air washing. In comparison, the water washing method is easy to operate and less dangerous. Most manufacturers use the water washing method to clean the concrete pump pipes. , Today we will talk about the method and precautions of pump tube washing.   Washing method: Put the water-soaked mud bag and cleaning ball into the cleaned conical pipe, connect the conical pipe and pipe, close the discharge door, and then fill the hopper with water (the water must be kept constant). Pump water until the wash ball emerges from the front end of the concrete pump tube.    Precautions: 1. Before cleaning, it is recommended to pump 0.5-1 cubic meter of mortar. After pumping all of it, stop the machine, flip the switch of the plate valve, and then remove the pressure of the accumulator. 2. At the end of the washing, be sure to pay attention to the water in the pipeline, do not flow to the concrete pouring site, so as not to affect the quality of the concrete. 3. Washing requires a small gap between the cutting ring and the eye plate (the butterfly valve pump requires a small gap between the plate valve and the tie rod and the upper and lower wear plates) and requires a large amount of water, which must be strictly sealed to ensure that the water after cleaning does not penetrate forward. 4. At present, wear-resistant ceramics are mostly used in the anti-wear layer of the pipeline of the pump truck. When cleaning this type of pipeline, attention should be paid to avoiding violent impact and avoiding the collision of metal and other hard objects, so as not to cause ceramic rupture. 5. Choosing a wear-resistant lining with higher smoothness can greatly reduce the difficulty of cleaning. The wear-resistant ceramic pump truck pipeline has self-lubricating components, which are easy to clean and has strong wear resistance, and its density is only half of that of steel pipes, so it is very convenient to disassemble and install.

The impact resistance of the ceramic wear-resistant lining plate is weak, and the wear-resistant ceramic sheet is directly combined with the inner wall, which has no buffering effect on the abrasive material. For materials with high impact, the ceramics are easily broken under a long-term operation environment. The composite sheet and rubber can play a very good buffering effect, which can solve the problems of fragile ceramics and noise.    It is suitable for the installation of various special-shaped equipment after vulcanizing ceramics and rubber into an integral lining board.   The ceramic surface will not bond with the material, and the long-term operating environment of the equipment will not cause material blockage and waste of material.   The wear-resistant ceramic rubber composite board has a lower density than steel plate, is lightweight, has easy installation, good wear resistance, and greatly saves maintenance costs.  

The wear-resistant ceramic composite steel plate is a kind of wear-resistant lining material with high wear resistance, high corrosion resistance, and high impact resistance, which is made of alumina (AL2O3) as the main material and is calcined at a high temperature of more than 1,000 degrees Celsius. Generally, the wear-resistant ceramic lining plate is composed of a bottom steel structure, the middle layer is a wear-resistant ceramic paste, and the surface layer is a wear-resistant ceramic material. Mainly used in steel mills, mine hoppers, trough machinery, coal, mining, chemical industry, cement, port logistics, and other companies in the conveying system, pulverizing system, ash discharge system, and other industrial equipment with greater damage, such as dust removal equipment, conveying equipment, etc.    Wear resistant ceramic composite steel plate product advantages: 1. It is not easy to be damaged. Alumina ceramics use 95% AL2O3 to add a variety of wear-resistant materials, and are formed by 100 tons of dry pressing, with high density, high toughness, and high wear resistance; 2. Cold and heat resistant, the development is developed on the basis of years of experience. A variety of ingredients are added to the rubber, so that the rubber will not change its internal structure at high temperatures of minus 50 degrees and 100 degrees, thereby reducing the phenomenon of rubber aging and ceramic peeling; 3. Impact-resistant and wear-resistant ceramics have been introduced into foreign technology to achieve the effect of refining grains, promoting calcination, and improving fracture toughness; 4. The adhesion is firm, the wear-resistant ceramic material is firmly bonded to the steel, and the wear-resistant ceramic lining board uses a two-component wear-resistant ceramic paste, which has a firmer adhesion and the ceramic is not easy to fall off. The wear-resistant ceramic liner has strong adhesion, good heat resistance, corrosion resistance, wear resistance, aging resistance, and other characteristics. According to data analysis, in the past ten years, wear-resistant ceramic linings have been used by many customers, and the stability is very good. So far, there has been no problem with the product falling off. It is very suitable for anti-wear application of material conveying systems with high impact force and serious wear.   http://www.ybnceramic.com/alumina-ceramic-liner/ceramic-rubber-composite-liner.html

Alumina ceramics have been widely used in many industries because of their excellent properties. Alumina ceramics is a general term for ceramic products made of calcined alumina as the main raw material. Due to the different content of alumina, it is divided into 75 ceramics, 85 ceramics, 90 ceramics, 95 ceramics, and 99 ceramics.   The raw material processing methods of alumina ceramics mainly include a dry method and a wet method. The dry method mainly uses a roller ball mill for dry grinding, and the wet method mainly uses a roller ball mill, stirring mill, and sand mill for wet grinding.   There are many molding methods for alumina ceramics, but the most important ones are grouting, hot die casting, film rolling, dry pressing, isostatic pressing, casting, injection and gel injection molding, etc. Different molding methods correspond to different processes.      The raw material processing methods of hot die casting and rolling film are mainly dry grinding, and the raw material processing methods of grouting, dry pressing, and isostatic pressing are mainly wet grinding. Hot die-casting, rolling film and gel injection molding, and other molding methods also need to mix organic matter into the processed powder, and dry-pressed and isostatic-pressed powders need to be granulated after wet grinding. The current granulation The equipment mainly includes a pressure spray drying tower and a centrifugal spray drying tower.   Different molding methods use different molds. The grouting method uses plaster molds, the hot die casting method and dry pressing method uses metal molds, and isostatic pressing mainly uses rubber molds.   The above-mentioned various molding methods have different molding principles and processes, so their characteristics are also different, and each has its own advantages and disadvantages. The choice of ceramic molding method should be comprehensively determined according to the performance requirements, shape, size, output, and economic benefits of the product. Grouting molding uses cheap plaster molds, simple equipment, and low cost, and is suitable for the manufacture of complex-shaped ceramic parts and large-sized ceramic products.   Dry pressing can form ceramic products with complex shapes, with high dimensional accuracy and almost no need for follow-up processing. It is the main molding process for making special-shaped ceramic products; it is especially suitable for the preparation of various ceramic products with small cross-sectional thicknesses, such as ceramic sealing rings, Ceramic water valves, ceramic liners, ceramic lining, etc.   The formed body is dried or degreased and loaded into a kiln for sintering. The corresponding sintering system is formulated according to the different alumina content. Theoretically, the higher the alumina content, the higher the sintering temperature required. Sintering equipment mainly includes a pusher kiln, tunnel kiln, roller kiln, shuttle kiln, and bell kiln.   After the fired alumina ceramic products are cleaned and selected, those with low requirements on dimensional tolerance and surface roughness can be directly packaged, and those with high requirements on the above two indicators must be ground and polished.   http://www.ybnceramic.com/wear-resistant-ceramic-pipe/ceramic-sheet-ceramic-tube/wear-resistant-ceramic-patch-pipes.html