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| News details |
Corrosion Causes of Rolling Bearings and Prevention
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| Time：2016.11.18 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Rolling bearing corrosion causes and prevention methods to determine, first of all depends on the rolling bearing corrosion caused by what is generally divided into external and internal causes. To sum up are:
1. Metal surface finish (oxygen concentration difference battery corrosion).
2. The chemical composition and structure of metal material itself.
3. Contact with the metal surface of the solution composition and pH value.
4. Ambient temperature and humidity.
5. The metal surface in contact with a variety of environmental media.
6. Another persons sweat is also the cause of bearing corrosion, its pH value of 5 to 6. Therefore, in order to prevent hand sweat caused by corrosion, installation and production personnel should wear gloves, do not hand contact with rolling bearings.
Coated anti-rust oil to prevent rolling bearing rust:
1. Soak method: Some small rolling bearings are immersed in the anti-rust oil, oil film thickness can be controlled by the temperature or viscosity of rust oil to achieve. So that the surface adhesion of a layer of anti-rust grease method.
2. Brush Method: Brush the application of uniform attention to the surface of the rolling bearing, do not produce accumulation, but also pay attention to prevent leakage coating.
3. Spray method: some large-scale anti-rust material is not suitable for use in soaking method of oil, usually about 0.7Mpa pressure filter compressed air in a clean place to spray the air. Spray method for solvent dilution-type anti-rust oil or thin anti-rust oil. This approach must be based on sound fire protection and labor protection measures.
Bearing in the load to rotate, the inner and outer raceway rolling surface or rolling surface due to rolling fatigue and scaly stripping phenomenon.
Bearing stripping damage causes:
1, the load is too large
2, poor installation (non-linear), torque load, foreign body invasion, water.
3, poor lubrication, lubricant inappropriate bearing clearance is not appropriate.
4, bearing box accuracy is not good, the rigidity of the bearing box axis deflection of large
5, rust, erosion, abrasion and indentation (surface deformation phenomenon) caused by the development.
What measures to take to solve the bearing stripping damage:
1, check the size of the load and re-use of the bearings
2, to improve the installation method to improve the sealing device, rust-proof shutdown.
3, the use of appropriate viscosity of the lubricant to improve the lubrication method.
4, check the accuracy of shaft and bearing box
5, check the clearance.
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