Causes and prevention methods of eccentric locking bearing corrosion

Eccentric locking bearing corrosion is caused by various internal and external factors, which can be summarized as follows: 1. Metal surface finish (oxygen concentration difference battery corrosion). 2. The chemical composition and structure of the metal material itself. 3. The composition and pH value of the solution in contact with the metal surface; 4. Ambient temperature and humidity. 5. Various environmental media in contact with the metal surface. 6. In addition, human sweat is also a cause of bearing corrosion, and its pH value is 5~6. Therefore, in order to prevent rust caused by hand sweat, installation and production personnel should wear gloves and do not touch the bearings with their hands casually.

Apply anti-rust oil to prevent eccentric locking bearings from rusting

1. Immersion method: Some small bearings are immersed in anti-rust grease. The thickness of the oil film can be achieved by controlling the temperature or viscosity of the anti-rust grease, so that a layer of anti-rust grease adheres to the surface.

2. Brushing method: When brushing, pay attention to evenly apply it on the bearing surface, do not produce accumulation, and also pay attention to prevent leakage.

3. Spray method: Some large anti-rust objects are not suitable for oiling by immersion method. Generally, filtered compressed air with a pressure of about 0.7Mpa is used for spraying in a clean air place. The spray method is suitable for solvent-diluted anti-rust oil or thin layer of anti-rust oil. This method must adopt perfect fire prevention and labor protection measures.

Pretreatment method for rust on the surface of eccentric locking bearing:

1. Surface cleaning: Cleaning must be combined with the properties of the bearing surface and the conditions at the time. Commonly used methods include solvent cleaning, mechanical cleaning and chemical treatment cleaning.

2. Surface drying After cleaning, it can be blown dry with filtered dry compressed air, or dried with a dryer at a temperature of 120~170℃, and finally wiped dry with clean gauze.

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