Bearing corrosion reasons and solutions
November 18, 2013 12:42am CST
Bearing corrosion is common, it will reduce the service life of bearing. So everyone in daily work must pay attention to this problem. High temperature bearing corrosion causes and prevention methods of determining, the first thing to look at high temperature bearing corrosion is caused by what, in general is divided into external cause and internal cause. Sum up the main are: 1. The metal surface finish (oxygen concentration cell corrosion). 2. Metal materials chemical composition and the structure itself. 3. Contact with the metal surface composition and pH value of solution. 4. The environment temperature and humidity. 5. The various environmental medium metal surfaces in contact with. 6. Other people's sweat is why cause bearing corrosion, its pH value of 5 ~ 6. So in order to prevent hand sweat cause corrosion, installation and production personnel should wear gloves, don't contact with high temperature bearing by hand. Tu rust-proof oil to prevent high temperature bearing rust: 1. Soak method: small by soaking in antirust oil, high temperature bearing oil film thickness can be controlled by the antirust oil temperature or viscosity to achieve. Make a layer of anti-rust oil on its surface adhesion method. 2. Brush method: evenly daub when you brush by in the high temperature bearing surface, do not build up, also should pay attention to prevent leakage. 3. The spray method: some big rust is not suitable for oil by soaking method, approximately 0.7 Mpa pressure filter is commonly used in compressed air for spraying in clean air. Spray method used solvent XiShiXing rust-proof oil or thin layer of anti-rust oil. This method must be used to perfect fire prevention and labor protection. Bearing the load bearing rotates, inner and outer ring raceway surface or rolling decent present designed stripping due to rolling fatigue phenomenon. Bearing causes of stripping damage: 1, the load is too large 2, installation is bad (non linear), torque load, foreign invasion, into the water. 3, poor lubrication, lubricants inappropriate bearing clearance is not appropriate. 4, bearing box accuracy is bad, the uneven rigidity of shaft deflection of bearing box 5 points, rust, erosion, abrasion and indentation (surface deformation phenomenon) the development of the cause. What measures are taken to solve the bearing stripping damage: The size of the 1, check the load bearing and used again 2, improve the installation methods, improve the sealing device, when stop rust. 3, using the appropriate lubricant viscosity, improving the lubrication method. 4, check the shaft, and the accuracy of bearing box 5, check the clearance.