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Iron-based oil bearing manufacturers take you to understand the causes of bearing rust

Iron-based oil bearing manufacturers take you to understand the causes of bearing rust

  • Categories:Industry News
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  • Time of issue:2022-12-05
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(Summary description)Iron-based oil bearing manufacturers tell you that bearings are precision mechanical parts that require high precision and high surface finish.

Iron-based oil bearing manufacturers take you to understand the causes of bearing rust

(Summary description)Iron-based oil bearing manufacturers tell you that bearings are precision mechanical parts that require high precision and high surface finish.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2022-12-05 14:39
  • Views:
Information

Iron-based oil bearing manufacturers tell you that bearings are precision mechanical parts that require high precision and high surface finish. Rust will cause the bearing to lose its original precision and finish, directly affect the performance of the bearing, reduce its service life, and even be scrapped . Iron-based oil bearing manufacturers tell you that in the process of bearing production and processing, if the anti-rust management measures are not proper, it will cause a lot of corrosion of semi-finished and finished parts, which will seriously affect the balance of connection and the completion of tasks on time. Therefore, bearing rust management is very important.

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Causes of bearing rust:
1. Humidity effect
The humidity in the air has a great influence on the corrosion rate of bearings. Under the critical humidity, the rate of metal corrosion is very slow, once the humidity exceeds the critical humidity, the rate of metal corrosion will suddenly increase. The critical humidity of steel is around 65%. Iron-based oil bearing manufacturers tell you that due to the poor air flow in the bearing production workshop, the heat generated during the processing accelerates the evaporation of water in the grinding fluid, cleaning fluid and anti-rust fluid into the air, so that the humidity of the air in the workshop is at 65%. More than 80%, it is easy to cause corrosion of bearing parts.
2. Temperature influence
Temperature also has a great influence on the corrosion of bearings. When the humidity is higher than the critical humidity, the corrosion rate increases about twice for every 10°C increase in temperature. And when the temperature difference changes greatly, the condensation on the bearing surface will greatly accelerate the corrosion. During the bearing processing process, due to the temperature difference between day and night or the ambient temperature, condensation will occur on the surface of the bearing, resulting in corrosion.
3. The effect of hand sweat
There are corrosive substances such as lactic acid and sodium chloride in the sweat of human hands. During the bearing processing and assembly process, if the operator takes and places the bearing parts with bare hands and does not wash off the sweat in time, it may cause "fingerprint rust". Iron-based oil bearing manufacturers tell you that this phenomenon is more serious especially in the sweaty summer. Therefore, when using the bearing, the operator must wear gloves or suitable protective equipment to prevent the bearing from being rusted due to hand sweat.
4. The effect of oxygen
Oxygen can be dissolved in water during the storage of bearings, and the phenomenon of oxygen concentration corrosion can be seen at any time, and the solubility of different parts will change. When the bearings are stacked, the oxygen is insufficiently inflated in the middle of the overlapping surface, the concentration in the water is low, the oxygen concentration at the edge is sufficient, the concentration in the water is high, and the rust often occurs on the peripheral edge of the overlapping surface.
5. Effect of pickling and acid printing solution
Pickling is often used in bearing processing to show defects such as burns, cracks, and decarburization; Iron-based oil bearing manufacturers tell you that some large bearings need acid printing numbers. After the bearing parts are pickled or printed, if they are not cleaned and neutralized thoroughly, the bearing parts will rust. In addition, when acidic substances come into contact with bearing parts, they can also cause corrosion.
6. Influence of dust and soot
Iron-based oil bearing manufacturers tell you that there are a lot of sulfur dioxide, carbon dioxide and other substances in the dust and soot. These substances will cause the bearing parts to rust, and the dust in the air will fall on the product, changing the state of the bearing surface and reducing the critical humidity. Moreover, the dust is easy to absorb moisture and becomes the medium of corrosion, causing spot rust.

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