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2022-11

What should we do if the miniature guide rail rusts?

Metal corrosion is the primary cause of failure in miniature linear guides. Especially during hot weather, sweat from the operator’s hands can also lead to rusting of the miniature linear guides. Therefore, miniature linear guide manufacturers recommend avoiding direct hand contact with the guides during operation. Human sweat is a colorless, transparent, or pale-yellow liquid containing salts and exhibiting weak acidity, with a pH value ranging from 5 to 6. In addition to salts of sodium, potassium, calcium, and magnesium, human sweat also contains small amounts of organic acids such as urea, lactic acid, and citric acid. When human sweat comes into contact with metal, it forms a thin sweat film on the metal surface. This sweat film can trigger electrochemical reactions on the metal surface, leading to corrosion. To prevent miniature linear guides from rusting, always wear gloves, finger cots, or use specialized tools when handling them. Currently, the issue of miniature linear guides rusting highlights our insufficient understanding of how to properly handle these components. Generally, miniature linear guides are coated with an anti-rust oil at the factory. So why do they still rust? The answer lies in the fact that many users, after finishing their work, simply store the guides directly in warehouses without taking additional protective measures. After using a miniature linear guide, it’s essential to apply another layer of anti-rust oil. Don’t assume that the factory has already applied sufficient oil—unfortunately, anti-rust oil tends to evaporate relatively quickly. Store miniature linear guides in a warehouse at room temperature, keeping them away from corrosive substances and ensuring that unused guides are not stored underground. This is because anti-rust oil evaporates more rapidly underground.

2022-11-30

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