Industrial Chain Manufacturers
2020年6月16日Industrial Chain manufacturers share the reasons that reduce the corrosion resistance of stainless steel conveyor belts:
1. Chloride ion. Chloride ion is extremely harmful to stainless steel conveyor belts. In the passivation process, the chloride ion content in the passivation solution should be strictly controlled, and the chemical materials used for passivation have a limited requirement for chloride ion. The water used to prepare the passivation solution and the cleaning water also have strict water quality requirements for chloride ions to ensure that the passivation products do not adhere to chloride ions to avoid future troubles.
2. Surface cleanliness. For stainless steel conveyor belts, the lower the surface roughness, the smoother the surface, the harder it is to attach foreign objects, and the lower the chance of local corrosion of each part. Therefore, stainless steel mesh belts should use a finished surface as much as possible. In addition, the cleanliness of the stainless steel surface is also very important. The final cleaning after passivation should be carefully carried out, because the residual acid promotes the cathode reaction and ruptures the film, thereby activating the stainless steel and reducing the corrosion resistance drastically.
3. Use environmental media. The passivation film of stainless steel conveyor belt is a thermodynamically suppressed metastable structure. Its protection efficiency is related to the environmental medium. It should be cleaned regularly during use to remove harmful substances attached to the surface for a long time. Especially in the environment with chloride ions, avoid the long-term adhesion of chloride ions to the surface and the concentration port in water such as stainless steel for food industry appliances. After each contact with food, they must be washed to avoid the role of chloride ions and damage to the blunt.化膜。 Chemical film. Such as containers and equipment used in dairy products, the chloride ion contained in the dairy products can damage the passivation film. If the dairy products are contained for a long time, the capacity and equipment will be corroded and perforated, so regular cleaning is required to restore the passivation film.
4. The internal factors of stainless steel conveyor belt. The martensite content and chromium-nickel content in the stainless steel mesh belt have a great influence on the passivation performance of stainless steel. When the nickel content is low, the passivation performance is low. The passivation film performance of martensitic stainless steel is not as good as that of austenitic stainless steel
The above content is organized and shared by Leaf Chain manufacturers, hoping to help those in need.
1. Chloride ion. Chloride ion is extremely harmful to stainless steel conveyor belts. In the passivation process, the chloride ion content in the passivation solution should be strictly controlled, and the chemical materials used for passivation have a limited requirement for chloride ion. The water used to prepare the passivation solution and the cleaning water also have strict water quality requirements for chloride ions to ensure that the passivation products do not adhere to chloride ions to avoid future troubles.
2. Surface cleanliness. For stainless steel conveyor belts, the lower the surface roughness, the smoother the surface, the harder it is to attach foreign objects, and the lower the chance of local corrosion of each part. Therefore, stainless steel mesh belts should use a finished surface as much as possible. In addition, the cleanliness of the stainless steel surface is also very important. The final cleaning after passivation should be carefully carried out, because the residual acid promotes the cathode reaction and ruptures the film, thereby activating the stainless steel and reducing the corrosion resistance drastically.
3. Use environmental media. The passivation film of stainless steel conveyor belt is a thermodynamically suppressed metastable structure. Its protection efficiency is related to the environmental medium. It should be cleaned regularly during use to remove harmful substances attached to the surface for a long time. Especially in the environment with chloride ions, avoid the long-term adhesion of chloride ions to the surface and the concentration port in water such as stainless steel for food industry appliances. After each contact with food, they must be washed to avoid the role of chloride ions and damage to the blunt.化膜。 Chemical film. Such as containers and equipment used in dairy products, the chloride ion contained in the dairy products can damage the passivation film. If the dairy products are contained for a long time, the capacity and equipment will be corroded and perforated, so regular cleaning is required to restore the passivation film.
4. The internal factors of stainless steel conveyor belt. The martensite content and chromium-nickel content in the stainless steel mesh belt have a great influence on the passivation performance of stainless steel. When the nickel content is low, the passivation performance is low. The passivation film performance of martensitic stainless steel is not as good as that of austenitic stainless steel
The above content is organized and shared by Leaf Chain manufacturers, hoping to help those in need.
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