Self-aligning roller bearing metal corrosion

On June 19, wafangdian bearing the authors explain in detail: (for you A) Self-aligning roller bearing metal corrosion of the internal factors from the point of the thermodynamics, the metal and its corrosion products, compared with high energy, it is not stable, have spontaneously to the trend of the corrosion products of low energy transformation, namely the rusting of the metal is a natural phenomenon. Industry in the vast majority of metal is a multicomponent alloy, microstructure, containing impurities, different machining uneven uneven deformation, stress distribution, etc. , the physical, chemical and electrochemical inhomogeneity, when the surface of the corrosive medium or form a water film, chemical or electrochemical corrosion will happen inevitably. （ 2) The relative humidity of the air relative humidity is higher, the thicker the water film on the metal surface, the oxygen in the air through the water film to the metal surface. Relative humidity reaches a certain value, the corrosion rate to rise significantly, this number is called the critical relative humidity, steel critical relative humidity of about 70%. The influence of the temperature of the environment temperature and relative humidity, dry environment ( Desert) Under the high temperature metal is not easy to rust. When the relative humidity reaches the critical value, significantly increase the influence of temperature, temperature increase 10 ℃, the corrosion speed increased by two times. Therefore, in the humid or rainy season, the higher the temperature, the more serious the rust. （ 3) Self-aligning roller bearing metal corrosion factors in the process of raw materials has been corroded, processing after failing to remove; Processing in contact with the cutting fluid, lubricant, such as process materials; After pickling and improper cleaning; Heat treatment of oxidation decarburization or residual salt cleaning not net; When inspection, handling and assembly operators left hand sweat; To stress or improper to hydrogen annealing; Between process and sequestration rust is not appropriate, etc. Bearing is comfortable and durable