Drawn cup needle roller bearing rust prevention methods

In we introduce stamping outer ring needle roller bearing anti-rust method before, we should first know what are the reasons caused the bearing will rust. We should know the main factors influencing the stamping outer ring needle roller bearing corrosion have? Then suit the remedy to the case of stamping outer ring needle roller bearing corrosion is caused by a variety of internal and external factors, sum up the main are: 1) stamping outer ring needle roller bearing itself is made, and bearing steel material chemical composition and structure of the bearing steel itself is has the potential of oxidation by air to embroider. (2) stamping outer ring needle roller bearing surface finish ( The oxygen concentration cell corrosion) ； (3) and stamping outer bearing surface contact solution composition and pH value; (4) deposit bearing environment temperature and humidity; (5) various environmental media and bearing surface in contact. Then drawn cup needle roller bearing rust what method? 1. First bearing surface cleaning: cleaning must be rust in accordance with the nature of the surface and the conditions, select the appropriate method. Is generally more solvent cleaning, chemical cleaning and mechanical cleaning method. 2. Bearing surface available filter after dry clean dry compressed air blow dry, or in 120 ~ 170 degrees Celsius dryer for drying, also can use clean cloth to wipe dry. Methods: 3 of bearing surface with anti-rust oil. Soak method: stamping outer ring needle roller bearing by soaking in antirust oil, make its surface adhesion on a layer of anti-rust oil. The temperature of the oil film thickness can be controlled by anti-rust oil or viscosity to achieve. 4. And the hand of the sweat will cause the corrosion of stamping outer ring needle roller bearing, the sweat is a colorless transparent or light yellow with salty in weak acid liquid, its pH value of 5 ~ 6. In addition to containing sodium, potassium, calcium, magnesium salt, also contains a small amount of urea, lactic acid, citric acid and other organic acids. When the sweat and the bearing surface contact, in the bearing surface to form a film of sweat, sweat membrane causes of bearing of electrochemical action, corrosion bearing, thus produce embroidery. Sweating is inevitable, to prevent hand sweat cause corrosion method, is the production personnel should wear gloves when bearing assembly, refers to the set, or use the special tool take bearing, don't contact bearing surface by hand.