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Main forms and causes of sprocket corrosion

Published Date:10-21-2021    Source:    Author:  Viewed:275
Corrosion and corrosion are surface damage phenomena caused by chemical reaction between metal surface and surrounding environment medium. Corrosion can be divided into color spots, time and pits according to different degrees.



1. Stain: in the form of dots or strips. The color is light gray or reddish brown, without depth.



2. Etching: in the form of dots, strips or flakes, the color is gray-black, with a slight touch.



3. Erosion pit: in the form of spot, strip or sheet, the color is reddish brown or black, and the feel is obvious.



Main causes of sprocket corrosion:



1. The quality of steel is affected by the price of selected materials. For example, the content of non-metallic impurities in steel is relatively high (the increase of sulfur content in steel reduces the corrosion resistance of the material itself), and the deviation of metallographic structure.



2. The quality of antirust lubricating oil, cleaning kerosene and other products used by the enterprise in production cannot meet the requirements of the technological regulations.



3. During the production process, the enterprise did not carry out anti-rust treatment on the parts in the processing process and the finished products after assembly in strict accordance with the cleaning and anti-rust regulations and the anti-rust packaging requirements of oil seals. For example, the chain is in contact with corrosive liquid or gas.



4. The environmental conditions of some enterprises are poor, the content of harmful substances in the air is high, and the turnover site is too small to carry out effective anti-rust treatment. In addition, there are many phenomena such as hot weather and violation of anti-rust regulations by production workers



Rust will make the sprocket lose its original luster, strength, toughness, etc. We need to operate correctly according to the characteristics of the sprocket during production and storage to avoid sprocket rust.
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