There are two main forms of industrial chain failure: one is failure caused by wear and tear; One is failure caused by fatigue.

Wear failure is the most common and obvious form of the industrial chain. There are many reasons for this failure. The main reasons are poor chain material and improper operation of workers. The most easily worn parts of the chain as a whole are sprocket and pin shaft. The wear of these two parts is mainly due to insufficient local lubrication, so in order to avoid this phenomenon, operators should pay attention to check the lubrication effect frequently, add lubricating oil in time, check whether there is abrasive in the lubricating oil or change the lubrication method. After the sprocket of the industrial chain is slightly worn, the sprocket can be reversely installed so that the less worn side faces the chain. In addition, if the use environment is harsh or the lubrication seal is not good, the hinge will be worn. Once the chain hinge is worn, the chain-link will become longer, which will easily cause tooth jump or chain release during operation, reduce the service life of the chain and accelerate the chain failure.

Let's talk about the failure of industrial chains caused by fatigue. At present, most factories in our country have workers rest and machines do not rest. Therefore, industrial chains are often overused and fail due to fatigue failure. That is to say, the chains bear excessive load during operation, resulting in uneven stress and easy breakage or extrusion. For this kind of situation, our chain factory can only solve it by strengthening parts.

In addition, in the process of low-speed and heavy-load transmission of industrial chains, overload breaking is also a common failure mode. Under certain service life, poor lubrication and sealing of the chain, or bad working conditions, will accelerate wear, leading to a significant reduction in the limit power, resulting in the failure of overload pull-off.

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The storage of the combine chains is also crucial for prolonging the service life. When these parts are not used, they cannot be placed anywhere, otherwise, the quality of the chain will be easily damaged. When storing these products, do not store them in damp, hot and chemically corrosive places. Avoid storage in a humid environment, because the combination chain in a humid environment, the surface covered with water and oxygen produce chemical reaction to form rust, which damages the quality of the chain and further affects the sales. Do not place the chain in a place with too high a temperature or in a place with direct sunlight. If the sunlight is direct, the temperature of the stool surface of the chain will rise, expanding with heat and contracting with cold, thus changing the physical characteristics of the chain and causing damage or tooth drop during use. Placing the chain in the corrosive chemical environment will seriously corrode the surface of chain sprocket. Most of the chains commonly used in corrosive environment are galvanized chains or nickel-plated chains. Therefore, the chain must be stored in accordance with reasonable regulations so as to prolong the service life of the chain and reduce the expenses of the manufacturer.

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1. One of the most important reasons for chain slipping is that the friction force between the chain and the conveyor belt is not enough. This phenomenon is mainly caused by water or humidity in the environment in which the chain is used. For this reason, we can take measures to add some rosin powder to the roller, but we should pay attention to not operating by hand in the process of adding rosin powder to avoid safety accidents.

2. The chain tension is too small, which is one of the reasons. It usually occurs at startup. The best solution is to adjust the chain tension device to increase the initial tension.

3. The speed of the conveyor in the conveying process is too fast, which will cause the conveying chain plate to slip. As long as we slow down the starting chain, we can effectively overcome the slip phenomenon.

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1. The chain is tired and invalid

Assuming that the lubrication conditions are relatively good, but also a relatively wear-resistant heavy roller chain is basically due to fatigue damage when it fails. Due to the tight and loose edges of heavy roller chains, the load borne by these parts will also change. When the chain rotates, it will stretch or bend due to stress. Due to various external forces, cracks will slowly appear on various parts of the heavy roller chain. The cracks will slowly grow larger and fatigue and fracture may occur over time. Therefore, when consuming heavy roller chains, various measures will be taken to improve the strength of the parts. In other words, chemical heat treatment is applied to make the parts appear carburized, and shot peening is also used.

2. The cohesion strength is damaged

When the heavy roller chain is used, due to the load, the joint between the outer chain plate and the pin shaft, as well as the inner chain plate and the sleeve, may loose during use, causing the eyelets of the chainplate to wear out, and the length of the heavy roller chain will increase, presenting failure. Since the chainplate will fall off when the riveted center of the pin shaft head of the chain is loosened, and the chain-link may fall apart when the center of the pin is sheared, the heavy roller chain will eventually fail.

3. The chain will fail due to wear in use.

Assuming that the heavy roller chain materials used are not very good, the chain will often fail due to wear. The length of the chain will increase after it is worn out, and it is likely that there will be teeth jumping or chain dropping when in use. The wear of the chain is usually in the center of the outer link. If the pin shaft and the inside of the sleeve show wear, the gap between the hinges will increase and the length of the outer joint will also increase. The distance between the inner links is usually affected by the bus bars on the same side between the rollers. As it is not normally worn, the length of the inner links is not normally increased. If the length of the heavy roller chain is increased to a certain range, it may be broken, so its wear resistance is very important when consuming chains.

In addition, the performance of the heavy roller chain will be affected by gluing, static tension breaking, frequent starting, braking and other actions in the application process, which may lead to failure of the heavy roller chain.

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