Solve IKO needle roller bearing corrosion of nine pay attention to the point

Metal material of its environment caused by chemical or electrochemical reaction changes in consumption is called corrosion. Metal surface corrosion is a common phenomenon, light person affect sound view, serious impact on the performance of products, and even affect the service life. Metal corrosion forms are varied, but the nature of metal and the surrounding medium to points can be divided into two categories, chemical corrosion and electrochemical corrosion. Chemical corrosion is due to pure chemistry between metal and the surrounding medium. No current chemical etching process, but there is corrosion substance is formed. This kind of corrosion is generally covered in a layer of porous film is formed on the metal surface. Chemical reactions of corrosion mechanism is simpler, mainly through contact between objects produced chemical reactions, such as gold in the atmosphere with water produced by chemical reactions of corrosion ( Also known as rust) 。 Electrochemical corrosion is caused by electrochemical effect between metal and the surrounding medium. The basic characteristics of electrochemical corrosion is the corrosion current is again at the same time produced. Corrosion mechanism of the electrochemical reaction mainly micro cell effect. When IKO bearing is in use, if a lot of sound, that is the voice of the sliding friction between the metal. At this time, is no harmful effects for bearing, but also will not affect its normal work. But when the sound, we need to check where can stop the sound? First of all, the needle roller bearing radial clearance is easy to generate sound, as well as in the case of a nasty speed can also be prone to. The second is easy to appear in the winter, and often are no rules. 1. Mixed with sand and carbon impurities in bearing. Acids or paint such as dirt, 2. Mixed with water in the bearing. Corrosion effect; 3. IKO bearing clearance is too small ( Choose the wrong) 4. Lubricating oil or grease varieties selected wrong; Oil or grease seal leakage) 。 5. Lubrication lack ( The oil level is too low. Or a hole distortion is not straight) 。 6. IKO bearings are hole clip flat ( Hole of the roundness is not good) 。 7. And the bottom surface of the bearing pad iron uneven ( Lead to a hole deformation even crack of bearing seat) Dust particles, etc. 8. Bearing hole with sundry ( Residual chip) 。 9. Seal eccentric ( Touching the adjacent components and friction) 。 In the needle roller bearing parts of the surface will produce corrosion. According to the corrosion damage of the degree of corrosion pit or corrosion pit ( Hole) , spots scattered or intensive distribution, and the corrosion pit is usually irregular shape, depth, color has a light gray, brown, beige, black, etc.