How to prevent needle bearing rust

How to prevent needle bearing rust release date: 2019 - 06 - 04 14:31:09 click: 154 before we introduce the antirust method of needle roller bearing, we should first find out what are the reasons caused the bearing will rust. We should know the main factors influencing the needle roller bearing corrosion have? Then suit the remedy to the case of the needle roller bearing corrosion is caused by a variety of internal and external factors, sum up the main are: (1) needle roller bearing itself material is made, and bearing steel chemical composition and structure of the bearing steel itself is has the potential of oxidation by air to embroider. (2) needle roller bearing surface finish ( The oxygen concentration cell corrosion) ； (3) contact with the bearing surface composition and pH value of solution; (4) deposit bearing environment temperature and humidity; (5) various environmental media and bearing surface in contact. So ring 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: 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 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. The previous: for needle roller bearing to consider two aspects of the next article: what are the applicable scope of the drawn cup bearing?