The main cause bearing rust corrosion

Bearing rust corrosion caused by many reasons, mainly due to the following six points:
1, some enterprises in the production process of bearing no strict rules on cleaning rust rust and seal packaging requirements for the processing of the bearing parts and assembled finished bearing anti-rust treatment. If ferrule turnaround process turnaround time is too long, the outer cylindrical contact with corrosive liquids or gases.
2, some companies used in the production of anti-rust oil, kerosene and other cleaning products reach quality technology requirements.
3, the bearing steel prices dropped lower and lower, resulting in a gradual decline in bearing steel. Such as high levels of non-metallic inclusions in steel (elevated sulfur content in the steel and the material itself anti-corrosion performance degradation), microstructure deviation. Currently used by manufacturers source more complex bearing steel, steel quality is mixed with fish and dragon beads.
4, some enterprises poor environmental conditions, high levels of harmful substances in the air, working space is too small, it is difficult for effective rust treatment. Coupled with hot weather, production workers violation rust there are some procedures such phenomena exist.
5, some enterprises rust-proof paper, nylon paper (bags) and plastic tube packaging materials such as bearings rust does not meet the requirements for packaging bearing oil seal is one of the factors leading to corrosion.
6, some companies bearing ring turning and grinding margin margin is too small, cylindrical on the oxide, carbon layer is not completely removed one of the reasons.