Six major causes of corrosion caused by hardware bearing products

The main causes of corrosion are as follows:

1. In the process of bearing production, some enterprises did not strictly follow the cleaning and rust prevention regulations and oil seal rust prevention packaging requirements for the bearing parts in the process of processing and the finished bearing products after assembly. If the turnover time of the ferrule is too long during the turnover process, the outer circle of the outer ring is in contact with corrosive liquid or gas, etc.

2. The quality of anti-rust lubricating oil, cleaning kerosene and other products used in production by some enterprises cannot meet the requirements of process technology.

3. As the price of bearing steel drops again and again, the material of bearing steel gradually declines. For example, the content of non-metallic impurities in the steel is too high (the increase of the sulfur content in the steel reduces the corrosion resistance of the material itself), the deviation of the metallographic structure, etc. The source of bearing steel used by production enterprises is more complicated, and the quality of steel is mixed.

4. Some companies have poor environmental conditions, high levels of harmful substances in the air, and too small a turnover space, which makes it difficult to carry out effective anti-rust treatment. Coupled with the hot weather, there are also phenomena such as violations of anti-rust regulations by production workers.

5. Bearing packaging materials such as rust-proof paper, nylon paper (bag) and plastic tube of some companies do not meet the requirements of anti-rust packaging for rolling bearing oil seals, which is also one of the factors that cause rust.

6. The turning allowance and grinding allowance of the bearing ring of some enterprises are too small, and the oxide scale and decarburization layer on the outer circle cannot be completely removed.