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The main causes of bearing corrosion  

2013-03-18 16:46:13|  分类: 技术 |  标签: |举报 |字号 订阅

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1, some enterprises in the production process of SKF bearings product not strictly according to regulations and cleaning rust prevention rust-proof seal packaging requirements of the process of bearing parts and assembly for antirust treatment. If the rings in the FAG bearings turnover process turnaround time is too long, contact with corrosive liquids or gases cylindrical outer ring.
2, some companies used in the production of anti-rust, cleaning the quality of kerosene and other products not to technology requirements.
3, because the bearing steel prices dropping lower and lower, resulting in a gradual decline in bearing steel material. Such as steel, non metal impurities in high ( sulfur content in steel increases the material corrosion performance ), metallographic structure deviation. Is the production of bearing steel sources used by enterprise was complex, the quality of the steel is a mixture of fish beads.
4, some enterprises poor environmental conditions, high levels of harmful substances in the air, working space is too small, it is difficult to carry out effective anti-rust treatment. Coupled with hot weather, production workers in violation of antirust regulation phenomenon is also no lack of.
5, some enterprises anti-rust paper, nylon paper ( bag ) and plastic tube packaging materials do not meet the rolling bearing NSK bearings oil seal packaging requirements are also one of the factors causing corrosion.
Turning and grinding margin margin of 6, part of the bearing ring is small, cylindrical oxide skin, decarburized layer is one of the reasons is not completely removed.
Identification of TIMKEN bearings corrosion.
Determination of corrosion pit depth, 1 naked eye observation: Observation of KOYO bearings surface corrosion state. 2 using a magnifying glass ( 5~10 times) further observation of INA bearings surface corrosion state. 3 the use of microscopy ( 25~100 times) analysis of corrosion products. Analysis to identify causes of corrosion. 4 usually according to the corrosion, corrosion can be divided into three types: 5 light rust: imported bearing surface loss of metallic luster, there is a dark gray. 6: imported bearing surface rust yellow, reddish brown, light brown or a small amount of rust powder. 7 heavy rust: bearing the appearance of a black flaky rust or convex rust.


来源:http://www.skf-bearingshops.com/
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