All FAQ
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The cracking property of the stainless steel chain plate is intergranular corrosion cracking, which causes cracking under the action of cold working residual stress and tensile stress during use. Intergranular corrosion is a corrosion form in which corrosion is confined near the grain boundary and the grain itself is less corroded. As a result, the grain is peeled off or the strength of the material is lowered. The mechanism of intergranular corrosion is the theory of chromium deficiency. Stainless steel chain plate stainless steel has high corrosion resistance due to chromium content, and its chromium content must exceed 12%, otherwise its corrosion resistance is similar to ordinary carbon steel. The high microhardness test results indicate that the stainless steel solid solution effect of the stainless steel chain plate is not ideal. Metallographic examination found a large amount of undissolved carbides and distributed along the intercrystalline network, indicating that the material was not solution treated, or the solution treatment temperature was not high, the time was short, the carbides were not fully dissolved, and the degree of alloying was Poor. Moreover, the heat treatment temperature is low, the chromium diffusion rate is slowed down, the chromium carbide precipitation is accelerated, and the formation of the chromium-depleted region is accelerated. Meanwhile, the chromium carbide distributed along the grain boundary exacerbates the grain boundary chromium deficiency, if the chromium content falls to 12% ( Below the limit chromium content required for passivation, the chromium-depleted zone is in an activated state, and as an anode, it forms a corroded galvanic cell with the die. The chromium-depleted zone is an anode with a small area, the crystal grain is a cathode, and has a large area, which causes severe corrosion of the chromium-depleted zone near the grain boundary. For stainless steel materials, intergranular corrosion is typically produced in high temperature organic acid media. The working environment of the failed stainless steel chain plate is closely related to the pollution degree of various vehicles and the type of pollutants, and the most used in cleaning is water, so the chain plate must be in contact with the organic acid medium. In addition, the high hardness of the stainless steel conveyor chain plate and the high carbon content of the 304 stainless steel itself will reduce the corrosion resistance of the stainless steel chain plate, and the S.S chain plate is affected by the friction between the sprocket and the transmission during operation. Stretching will increase the temperature of the stainless steel chain plate, which will also accelerate the corrosion rate of the stainless steel chain plate. Once the interlamella corrosion occurs in the chain plate, its strength is significantly reduced, so that cracking occurs under tensile stress and its own cold working residual stress. It is recommended that the manufacturer change the stainless steel chain plate material to 304 stainless steel with a lower carbon content and ensure the quality of the solution treatment of the raw materials. After this measure, the produced stainless steel chain has not cracked in use.
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1. The power of the belt conveyor motor should be comprehensively calculated according to the belt bandwidth, conveying distance, inclination angle, conveying amount, and material characteristics and humidity. 2. A belt conveyor is a machine that frictionally drives materials in a continuous manner. It is mainly composed of a frame, a conveyor belt, a roller, a roller, a tensioning device, a transmission device and the like. It can form a material conveying process between the initial feeding point and the final discharging point on a certain conveying line. It can carry out the transportation of broken materials as well as the transportation of individual items. In addition to pure material handling, it can also be combined with the requirements of the process in the production process of various industrial enterprises to form a rhythmic flow line. 3. The belt conveyor is also called belt conveyor. The conveyor belt moves according to the principle of friction transmission. It is suitable for conveying powder density, less than 1.67/ton/m3, and easy to extract powder, granular and small pieces. Materials and bagged materials, such as coal, gravel, sand, cement, fertilizer, grain, etc. The belt conveyor can be used in the ambient temperature range of -20 ° C to +40 ° C, and the material temperature to be sent is less than 60 ° C. The captain and assembly form can be determined according to user requirements. The drive can be used with an electric roller or a drive with a drive frame.
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The belt conveyor has been widely used in agitation, crushing and screening equipment. During the operation of the conveyor, the belt deviation phenomenon often occurs due to various reasons, which will not only cause leakage, abnormal wear of the equipment and Damage, reduced productivity, and can affect the normal operation of the entire equipment. Therefore, it is a very important task to correctly determine the cause of tape deviation and eliminate it in time. The fundamental reason for the deviation of the conveyor belt is that the combined force of the external force of the belt in the belt width direction is not zero or the tensile stress is perpendicular to the belt width direction. Due to the many factors that lead to the deviation of the belt, it is necessary to solve the deviation law of the belt from the aspects of design, manufacture, installation, commissioning, use and maintenance of the conveyor: “Run tight and not run loose”, “Run high and not run low” ", "Do not run before running." That is, if the tightness on both sides of the belt is different. Then the belt moves to the tight side; if the height of the belt is different, the belt moves to the high side; if the roller bracket and the like are not installed on the vertical section of the belt running direction, but the end is in front, One end is behind (in the direction of belt travel) and the belt moves to the rear. How to adjust the conveyor belt deviation? 1. Adjust the belt conveyor tensioning mechanism. When the belt is running, if it is biased to the same side under both no-load and heavy-load conditions, the tightness on both sides of the belt is different, and should be based on “running tight and not running loose”. The rule of the screw or the weight of the tensioning mechanism is adjusted; if the belt runs away from the left and there is no fixed direction, the belt is slack and the tensioning mechanism should be adjusted. 2. Adjust the belt conveyor drum method If the belt runs off the drum, it indicates that the drum is under-level, the drum is tilted axially, or one end of the drum is at the front end. At this time, the level and parallelism of the drum should be corrected. 3. Adjust the belt conveyor roller bracket (or frame) method. If the belt always runs to one side when it is empty, the roller bracket on the side of the deviation should be moved forward by 1-2cm in the belt running direction, or The other side roller bracket (or frame) is raised appropriately. 4. Removal of the sticking method If the belt conveyor roller and the roller are partially adhered to the material, the diameter of the belt will be increased, resulting in an increase in the belt tension at the place, thereby causing a deviation. The adhered material should be cleaned in time. 5. Adjust the gravity method. If the belt conveyor belt does not run off when it is empty, it will always go to one side when it is heavy, indicating that the belt has been eccentric. The position of the hopper or belt conveyor should be adjusted so that the tape is loaded to prevent it from running off. 6. Adjusting the belt method If the belt conveyor belt edge wear is severe or the belt seam is not parallel, the tension on both sides of the belt will be inconsistent. The belt should be reconditioned or replaced. 7. Installation of the offset roller method If two sets of automatic self-aligning rollers (flat rollers or grooved rollers) are installed on the belt conveyor, the deviation of the belt can be automatically corrected. For example, when the belt runs away from the friction of one side of the small stop roller, the bracket on the side should be moved forward in the running direction of the belt, and the other side will move backwards relatively, and the belt will move backwards. Move the roller side until it returns to the normal position. 8.Installing the limit roller method If the belt conveyor belt always shifts to one side, the limit vertical roller can be installed on the frame on the deviation side; thus, on the one hand, the belt can be forcedly reset, on the other hand The roller reduces the tension of the belt on the offset side and moves the tape to the other side. 9. Install an automatic correcting device Install an automatic correcting device on the belt conveyor to prevent the belt from running off.
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The choice of the chain first selects the geared motor. It is necessary to understand the power demand, the load and the weight, and the transmission speed according to these to select the conveyor chain. Once the chain is selected, we can make the sprocket. In the chain drive design, the average number of even links corresponds to the number of odd sprocket teeth, which can achieve uniform wear and increase the service life. The general rule of choice for chain sprocket: 1. In chain chain transmission, the larger the pitch, the greater the bearing capacity and the greater the dynamic load. 2. The larger the sprocket pitch, the smaller the number of teeth, the greater the chain speed change. 3, the choice of sprocket and chain is to be calculated, the average speed of the chain V = z1n1p / 60 * 1000 = z2n2p / 60 * 1000 The higher the speed of the conveyor sprocket, the larger the pitch and the smaller the number of teeth, the greater the dynamic load of the transmission. The number of teeth of the sprocket is in the range of 17≤Z≤120 The above is how to choose the chain sprocket that suits you. According to the above, you can make a sprocket chain that suits you.
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The correct operation of the screw conveyor is to improve the work efficiency, of course, it will also ensure the safety of personnel and reduce the occurrence of accidents. Of course, how to be proficient in the daily operation of the screw conveyor? The correct operation of the plastic chain screw conveyor is very good to improve work efficiency, of course, it will also ensure the safety of personnel and reduce the occurrence of accidents. Of course, how to be proficient in the daily operation of the plastic modular belt screw conveyor? What are the other steps? Let's introduce it to everyone!Screw conveyor operation method: 1. Stainless steel screw conveyor personnel should be trained and certified to master the knowledge of the structure and performance of stainless steel screw conveyors, know how to operate, and regularly carry out maintenance of the machine. 2. When the operator of the screw conveyor receives the signal from the tail of the machine, it must contact the equipment of the predecessor to determine whether the equipment of the preamp is operating normally. 3. Check the screw conveyor equipment and check if there is no problem before starting the machine. 4. Jog operation on the screw conveyor equipment, normal operation after no problem after jogging. 5. During the operation of the screw conveyor equipment, the driver should pay attention to the situation at any time. If the abnormality should be dealt with in time, the temperature of the machine bearing should not exceed 75 degrees Celsius. For the chain, pay attention to the presence or absence of the chain, chain or jump chain phenomenon. 6. After the spiral conveyor has an abnormality, it should be stopped immediately, and the operation can be continued after the fault is eliminated. 7. After the screw conveyor machine equipment is shut down, the operator should clean up the equipment and record the problems that occur during the operation of the machine equipment for future reference. 8. Before the screw conveyor stops, the material on the conveyor should be emptied to avoid the screw conveyor load starting. 9. The maintenance should be carried out under the condition that the screw conveyor is powered off, and the warning sign is hung.
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There are more and more environments for conveying operations in modern production, and the most advantageous features of modular belt conveyors have been adopted. In this case, you must understand whether the belt conveyor is suitable for your own product delivery, and do not blindly purchase. The mesh belt conveyor is more suitable for the conveying of shaped objects, and is most suitable for product cleaning, conveying and drying. The advantage of the mesh belt conveyor is the metal conveyor belt structure, corrosion resistance, high temperature resistance, low cost and long service life, which also makes the mesh belt conveyor suitable for a variety of material transportation advantages. Mesh belt conveyors are used more and more in drying, cleaning and food industries, which is not unrelated to the unique technical characteristics of mesh belt conveyors. Such as long conveying distance, transparent conveyor belt, corrosion resistance, high temperature resistance, are the technical characteristics of the belt conveyor, which is unmatched by other methods, because with these, the belt conveyor is also more widely transported. The field is used, from the original single food industry to the current industrial cleaning, product drying are equipped with mesh belt conveyors. The current belt conveyor has been extended from a single food delivery to drying, conveying, cleaning, metal conveying, automated transportation and many other working environments. In many conveying operations, the old-fashioned mesh belt conveyor can no longer meet the matching with other equipment. The functions such as synchronization, load-bearing induction and intermittent transportation need to be completed by the belt conveyor. At this time, the degree of automation of the belt conveyor is high. It is especially important. In order to match the advanced equipment with the belt conveyor, it is necessary to improve the degree of automation. Only when the automatic control and automatic transmission are achieved, the belt conveyor can take a step higher. Talking about mesh belt conveyors, people working in the transportation industry are very familiar with the conveyor belts in the working environment of food, fruits and vegetables, drying, cleaning and so on. I feel that there are quite a few belt conveyors on the Internet, but there is still more space for the belt conveyor in the transportation industry. In order to expand the use of mesh belt conveyors, there are still many places to break through. The main breakthrough is the automation control, which is the main reason why the belt conveyor can not move to the high end. There is also a need to break through like the appearance of work, do not say that it can be used on the line does not matter. As long as these configurations of the belt conveyor are raised, it will have more room for use. With the increase in the use of mesh belt conveyors, the problem of the configuration of the belt conveyors needs to be taken seriously. Whether it is transporting in the natural environment or drying, cleaning and conveying, the belt conveyor should have basic configuration such as speed regulation, tensioning and emergency stop. Other configurations include: induction, intermittent, remote control, alarm Wait. Among them, speed regulation and tensioning and emergency stop are the most important, and it is also the most basic configuration of the mesh belt conveyor. Nowadays, the speed regulation and tensioning are mostly selected for induction speed regulation and automatic tensioning. Only with these is a normal mesh belt conveyor.
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Sealing and lubrication are the key issues in the design of the toothed chain assembly, because most of the failure of the toothed chain assembly is due to the early failure of the bearing due to the entry of the lubricating medium into the debris, the sealing structure and the original due to lubrication and heat dissipation problems. Early failure. Therefore, the flexible conveyor seal and lubrication can not be considered separately, but a purposeful and foreseeable deployment design according to the specific structure and use environment. At present, the sealing method of the toothed chain assembly can be divided into the following types: 1. Rotary oil seal seal This seal is easy to realize, simple in structure and processing, convenient in disassembly and assembly, and low in cost. The disadvantage is poor sealing ability and low service life. Therefore, most of them are applied to small scraper conveyor equipment. 2, floating seal floating seal has the advantages of high sealing performance and long service life. Widely used in scraper sprocket assemblies. At present, most of the domestic use of two types of floating seals: 0-ring type and rectangular (diamond) ring type. 0-ring floating seal with automatic centering. Adapt to occasions with large angular deviations. The rectangular (diamond) ring type floating seal has the advantages of inaccurate axial deviation, simple sealing chamber shape and easy processing and assembly. Both types of floating seals require: the quality of the rubber ring is stable, especially the elasticity is excellent, and has good adaptability; for the iron ring, the flatness of the bright band is required to be high, and the wear resistance and heat resistance are good. 3, labyrinth, felt ring, dust ring auxiliary seal labyrinth, felt ring, dust ring is a necessary auxiliary link, flexible conveyor should be actively arranged when space allows. This promotes the sealing of the sprocket assembly. In fact, the main idea of sealing and dustproof should be: dust is worse than dust. If you can use a good structure to avoid the location of the polluted environment such as coal dust, it will have a multiplier effect on the seal. In summary, the problem of toothed chain sealing and lubrication needs to be considered.
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CE certification, that is, only the product does not endanger the basic safety requirements of human, animal and goods safety, rather than the general quality requirements, the coordination directive only specifies the main requirements, the general directive requirements are standard tasks. Therefore, the exact meaning is that the CE mark is a safety pass mark and not a quality pass mark. It is the "main requirement" that constitutes the core of the European Directive.The “CE” mark is a safety certification mark and is regarded as a passport that the manufacturer opens and enters the European market. CE stands for CONFORMITE EUROPEENNE.In the EU market, the “CE” mark is a compulsory certification mark. Whether it is a product produced by an enterprise within the EU or a product produced by another country, in order to freely circulate in the EU market, the “CE” mark must be affixed to indicate the product. It meets the basic requirements of the EU Directive on Technology Coordination and Standardization. This is a mandatory requirement for products in EU law.Have you passed CE certification? Yes, of course. We have passed CE certification on 2016.July.17th.All our conveyor machine equipment is reliable. Welcome you to visit us, and purchase product from us.Guangzhou Hongjiang the best reliable conveyor and conveyor component manufacturer in China.
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Mechanical conveyor equipment plays an important role in the work, and the conveyor chain is one of the most important parts in the equipment. The plate chain is also a kind of chain and also plays an important role. If the plate chain takes too long, it will cause such problems. Then how to judge the scrapping of the chain?The general rule of the plate chain is judged from the following aspects: First, the operator should be clear that the wear value allowed by the plate chain is limited. Generally speaking, it cannot be higher than the diameter of the ring chain bar. Tenth. The second point is to see the degree of distortion of the main ring of the main chain of the plate chain. If it is greater than 10 degrees, it will be scrapped. Of course, this should start from the uncurved plane above the main ring. If the chain of the plate chain is used for a long time, cracks, bends, etc. will occur. If it cannot be removed after being removed, it can no longer be used, and it is counted as scrap.Once the conveyor line plate chain has a problem, it will cause a lot of trouble for production. Then we must do daily maintenance and maintenance in our lives, and strive to reduce equipment damage. Jin Hengli usually does this. First of all, when installing the conveyor sprocket on the shaft, make sure that there is no swing and inclination. When the same drive assembly is not used, the rotary shaft should be in the same horizontal plane. If there is deviation, it will be Let the professional technicians carry out the repairs.The tightness of the plate chain should be appropriate. It should not be too tight or too loose. If the chain is too tight, the power of the device will increase and the consumption will be excessive. If it is too loose, the device will easily jump or even be unchained. Chains that have been used for a long time should not be mixed with new ones to avoid impact when used and to break the chain.
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Toothed chain plate is an important mechanical root piece used throughout. It is mainly used in high speed, heavy load, low noise and large center distance. Its transmission function is better than toothed belt drive, gear transmission and chain. Transmission, so the gear of the toothed chain plays an important role, but if the gear of the toothed chain fails, it will affect its mission efficiency, so let us first understand the way the lower gear chain gear fails.1. Tooth surface wear: Regarding open gear transmission or closed gear transmission with unclean lubricating oil, because of the relative sliding between the tooth surfaces, some hard abrasive grains enter the conflicting appearance, and then the tooth profile is changed. The side gap is increased, so that the excessive gear thinning causes the tooth to break. Under normal conditions, only when the abrasive grains are mixed in the lubricating oil, the wear of the tooth surface will be caused during operation.2. Tooth surface gluing: In the gear transmission of high speed and heavy load, due to the conflicting force between the tooth surfaces, the relative speed is large, causing the temperature in the meshing zone to be too high. Once the lubrication condition is poor, the oil film between the tooth surfaces will disappear. The metal appearance of the two teeth is directly touched and then bonded to each other. When the two tooth surfaces continue to move relative to each other, the harder tooth surface tears part of the data on the softer tooth surface in the sliding direction to form a groove.3. Weak pitting: When two teeth are engaged with each other, the effect force and counter-effect between the tooth surfaces cause the contact stress on the outer surface of the two missions, because the orientation of the meshing point is changed, and the gear is made periodically. The movement, so the touch stress is changed by the pulsating cycle. For a long time under the effect of such alternating touch stress, a small crack will appear at the tooth mark of the tooth surface. Following the passage of time, the crack gradually expands laterally in the surface layer, and the crack forms a ring shape, so that the tooth teeth A small area of spalling occurs on the exterior to form some tired shallow pits.4, the tooth broken: in the operation of the load bearing gear, like the cantilever beam, the root of the pulse of the periodic stress beyond the fatigue limit of the gear data, will crack at the root, and gradually expand, when the rest Broken teeth can occur when the transmission load cannot be tolerated. Gears can cause broken teeth due to severe impact, partial load and uneven material in the mission.5. Plastic deformation of the tooth surface: Under the impact load or heavy load, the tooth surface is prone to partial plastic deformation, and then the curved surface of the involute tooth profile is deformed.
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Introduction to the tank chain/draging case chain, the world's first conveyor chain appeared in Germany in the middle of the last century, the German Jiabaolai company discovered the market, the inventor of the conveyor line drag chain is called Dr Gilbert. Waninger's German professor, Jiabaolai Company at that time, keenly discovered that the towline will have great development in the future, and its invention will have great demand. So in the second year of the invention, they began to make full efforts. The market launched the first towline, which played an indelible role in the rapid spread of the assembly line to the world, and also provided a powerful opportunity for the development of the transportation equipment industry at that time. The draging case chain conveyor is a combination of many unit chains. Its shape resembles a tank chain. Each unit chain is made up of a combination of upper and lower cover plates and left and right chain plates. It can rotate the link very freely. Each node of the chain can be easily disassembled and opened, and if necessary, separate the space in the chain with a separator. In the same parameter model of the drag chain, its outer height, inner height, and pitch are the same, and the bending radius and inner width of the drag chain can be differently selected according to different needs.The towline is widely used in the machinery industry, and is generally used in lifting and transportation equipment, glass machinery, robots, door and window machinery, injection molding machines, control machine tools, electronic equipment, stone machinery, and automated warehouses. It is characterized by easy installation and maintenance, oil resistance, salt resistance, acid resistance, alkali resistance, wear resistance, low operation noise, long operating life, open sections of the towline, high speed movement and a little acceleration. The acceleration is generally determined by the situation. It is also suitable for the environment of repeated motion, and can play a traction and protection function for the built-in cable, oil pipe, air pipe, water pipe and the like. Tow chains generally use high toughness, high elasticity, wear resistance, high temperature resistance and pressure load resistance materials, which are generally made of reinforced nylon or POM.
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Many people know about the S.S chain. This is a part of many equipment that plays the role of a transmission. However, sometimes people find that the chain is actually rusted, which will affect the quality of the chain. Many people want to figure out why the chain is rusted. Then today we will discuss the reasons for chain corrosion.1. In the process of producing the conveyor chain, the enterprise does not strictly carry out anti-rust treatment on the chain parts in the processing process and the finished chain products after the cleaning rust prevention regulations and the oil seal anti-rust packaging requirements. If the chain is in contact with corrosive liquids or gases.2. The quality of anti-rust lubricants and cleaning kerosene used by enterprises in production cannot meet the requirements of process technology.3. As the price of chain steel drops and then falls, the material of the chain steel gradually declines. For example, the content of non-metallic impurities in steel is high (the increase of sulfur content in steel makes the corrosion resistance of the material itself decrease), the deviation of metallographic structure and so on. The source of the chain steel used by the production enterprises is more complicated, and the quality of the steel is even more.4. Some enterprises have poor environmental conditions, high levels of harmful substances in the air, and too little turnover space, making it difficult to carry out effective anti-rust treatment. Coupled with the hot weather, production workers violate the anti-rust procedures and so on.Guangzhou Hongjiang can provide you the best quality stainless steel chain. You can also customized the chain material by yourself.
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The hopper is actually a very common food vertical conveyor accessory, and is divided into different types according to different materials, such as plastic hopper, nylon hopper and so on. Although there are many types of hoppers, plastic hoppers are very popular, and many people are very confused about the reasons for the popularity of plastic hoppers. Here is a brief introduction to the advantages of plastic buckets.1. Good wear resistance, service life is higher than steel hopper, and wear is one of the main failure modes of the hopper. Today's plastic hoppers attach great importance to this problem. In the formulation of raw materials, there are unique wear-resistant ingredients, qualified products produced by professional manufacturers, and also passed the test of local quality supervision and inspection stations and issued test reports. The wear resistance of a good plastic hopper can reach 7500 of A3 steel. Since the thickness of plastic hopper is generally 3 times that of steel bucket, theoretically, the service life of bucket hoist plastic hopper should be 2 of steel hopper. More than double.2, good flexibility, does not damage the particulate material, plastic hopper due to its unique flexibility, can greatly reduce the damage rate of the material being lifted. Especially in rice processing plants, it is often necessary to upgrade a lot. Therefore, the broken rice produced by the hoist has a considerable proportion in the whole rice milling process. In the aspect of raw grain shredding, the hopper of plastic hopper is corrosion-resistant and has good low temperature, especially suitable for damp, cold and warm environment and intermittent use.
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Adjusting the foot is a very common accessory. It has a wide range of applications. It can be used on both the equipment of the production enterprise and the household appliances in the home, such as conveyors. Sometimes it will not be placed when it is placed. Stable, this time you need to adjust your feet to help. The biggest feature of this accessory is that it can adjust the height. There is a screw hole in the middle of the adjustment foot. Then adjust the length of the screw to adjust the height of the device. The adjustment feet are also often used in production enterprises, such as conveyor chains or conveyors. They are used constantly. The conveyor equipment is constantly working. The equipment will have amplitude. The stability of the bottom is very important, otherwise it will cause the side. Turning over, with adjustment feet, adjusting unstable places at any time is necessary for equipment and production. There are many kinds of materials for adjusting the feet. There are plastic and stainless steel. Generally, the households use plastic materials. The enterprises use stainless steel for the sake of firmness. After all, the bearing is much more important. On some coal conveying equipment, Be sure to use the hardness of the adjustment foot to transport the coal to the destination smoothly. When using the adjustment foot, the clockwise torsion is lowered, and the counterclockwise rotation is to increase. After the adjustment is completed, the locknut must be tightened to avoid shaking and instability of the device. It is best to check if the height of the diagonal adjustment feet is the same, and keep the same level high and smooth. The price of the adjustment foot is related to the material. The price of the plastic will be slightly lower, then the price of the stainless steel will be higher. The purchaser should purchase according to the production needs, but must buy a good reputation product, although it is an accessory, but in It also plays a big role in the work, so it cannot be ignored.
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