The main cause of 'stainless steel bearing' rust corrosion 28)

The main cause of bearing rust corrosion causes of the stainless steel bearing rust corrosion has a lot of, the main reason has the following six: 1, some enterprises in the process of production of bearing no rust cleaning procedures and oil seal antirust packing in strict accordance with the requirements of bearing parts in the process of machining and assembly after antirust processing of bearing products. Such as ring in the process of turnover turnover time is too long, outer cylindrical contact corrosive liquids or gases, etc. 2, some enterprises in the production of antirust oil, cleaning products such as kerosene used quality can not reach the requirements of the technology. 3, due to a bearing steel price drop down again, resulting in bearing steel quality decline gradually. Such as non-metallic impurities content in steel on the high side, The increase of sulfur content in the steel material fall in corrosion resistance) , metallurgical structure deviation, etc. Is now used in bearing steel production enterprise source is miscellaneous, steel quality fish dragon fraud. 4, part of the enterprise's poor environmental conditions, harmful content is high in the air, flow field is too small, it is difficult to effectively antirust processing. Coupled with the hot weather, the production workers in violation of the phenomenon such as antirust procedures were there. 5, some enterprises anti-rust paper, nylon paper ( Bag) And a bearing packaging materials such as plastic cylinder does not accord with the requirement of rolling bearing oil seal rustproof packaging is one of corrosion factors. 6, some enterprises the turning of the stainless steel bearing ring grinding allowance allowance and small, the oxide coating on the cylindrical, failed to completely remove decarburization layer is also one of the reasons. 7, some enterprises made of stainless steel bearings, in fact or in the bearing steel, carbon steel as raw materials, so easy to rust corrosion. So how to solve the problem of rust? Everyone knows metals products, easy to rust after oxidation, stainless steel bearings is no exception. There are many factors influence its rusty, such as chemical composition and structure of the metal material itself; Surface finish ( The oxygen concentration cell corrosion) ； Contact with the metal surface composition and pH value of solution; And its surroundings, such as a number of factors, these are the direct factors rust metal. In addition, when we use metal items, items do not direct contact with the hand, because the person's sweat is a colorless transparent or light yellow with salty in weak acid liquid, 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. So, we want to use the special gloves or refers to the set of special tools to take items, such as don't direct contact with the hand. Bearing rust prevention methods: 1, the 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. When 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. 2, the method of coating anticorrosive oil ( 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.