INA bearings used in several common rust - bearing lubrication method knowledge

1) Surface cleaning: cleaning must be rust in accordance with the nature of the surface and the conditions, select the appropriate method. There are usually used solvent cleaning, chemical cleaning and mechanical cleaning. 2) INA bearing surface available filter after dry clean dry compressed air blow dry, or in 120 ~ 170 ℃ dryer for drying, also can use clean cloth to wipe dry. Coating anticorrosive oil method 1) Soak method: some small items 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. 2) Brush method used for soaking or spraying outdoor construction equipment or not apply special shaped products, brush should not only pay attention to not build up, also should pay attention to prevent leakage. 3) Spray a few large rust cannot be oiled by soaking method, generally about 0. 7 mpa pressure filtering compressed air spraying where clean air. Spray method used solvent XiShiXing rust-proof oil or thin layer of anti-rust oil, but must use perfect fire protection and labor protection measures. What are the main factors influencing the metal corrosion? Metal corrosion is caused by a variety of internal and external factors, sum up the main are: 1) metal material chemical composition and structure; (2) metal surface finish, The oxygen concentration cell corrosion) ; (3) contact with the metal surface composition and pH value of solution; (4) environmental temperature and humidity; (5) the various environmental medium metal surfaces in contact with. Cause why hand sweat INA bearing metal rust? 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 contact with sweat and metal on metal surface to form a film of sweat, sweat film will cause electrochemical action on metals, the corrosion of metal. 1, solid lubricant used in some special conditions, adding a small amount of solid lubricant grease, such as adding 1 of 3-5% molybdenum disulphide can reduce wear and improve the compressive strength heat-resistant ability, for high temperature, high, high vacuum, corrosion resistance, resistance to radiation, and the special conditions such as extremely low temperatures, the solid lubricant in engineering plastics and powder metallurgy materials, self-lubricating performance can be made with INA bearing parts, such as the solid lubricant with adhesive bonding on the raceway, cage and rolling body, lubrication film formation, has certain effects on reducing the friction and wear. 2, oil lubrication, is an important characteristic of lubricating oil viscosity, viscosity directly affect the liquidity of lubricating oil and the size of the friction surface is formed between the oil film thickness, the bearing working temperature of lubricating oil viscosity is usually 12 - 15cst。 Speed the Gao Yingxuan lower viscosity, the more load weight should choose high viscosity. Commonly used lubricating oil has high-speed machine oil, machine oil, turbine oil, compressor oil, transformer oil, cylinder oil, etc. Oil lubrication methods include: a. Oil bath lubrication oil bath lubrication is the most common lubrication method, suitable for low, medium speed, bearing lubrication, bearing part of immersion in the slot, the bearing parts of lubricating oil by rotating, and then flow back to the oil level of oil tank should be slightly lower than the lowest at the center of the roller. b。 Oil drip lubrication oil drip lubrication is suitable for need to ration oil bearing parts, drip oil every 3 - general A drop of it is advisable to 8 seconds, too much oil will cause the bearing temperature increased. c。 Circulating oil lubrication oil pump in the conversion of the filter oil transfer to the bearing parts, through the bearing lubricating oil filter cooling after use. Because of the circulating oil can take away a certain quantity of heat, cooling the INA bearing, therefore method is suitable for high speed bearing parts. d。 Spray lubrication with dry compressed air after the sprayer and lubricating oil mixed form oil mist, spray bearing, can effectively make the bearing cooling airflow and can prevent the intrusion. This method is suitable for high speed, high temperature lubrication bearing parts. e. Spray lubrication with oil pump nozzle shot into the bearing, the oil in the high pressure into the bearing of the bearing at the other end into the oil in the tank. When bearing at high speed, rolling element and cage with high rotate speed makes the surrounding air, the air in general lubrication method is difficult to be sent to INA bearing lubricating oil, use the method of high-pressure jet spray the lubricating oil must be taken to the bearing, the position of the nozzle should be placed between inner ring and retainer center.