Subway bolts are a common fastener in daily life. When using subway bolts, they are prone to rust. Rust on subway bolts can affect their appearance, and it can also affect the performance of subway bolts. Therefore, when using subway bolts, it is important to pay attention to the rust prevention of subway bolts. Below, we will introduce the reasons for subway bolt rust. If there is dust or other metal particles attached to the surface of subway bolts, the attachment and condensation of subway bolts form a micro battery in humid air, which generates an electrochemical reaction. In this case, subway bolts will rust.

The surface of subway bolts may be stained with organic juices, and subway bolts will form organic acids in the presence of water and oxygen. Under the corrosion of organic acids, subway bolts will rust. If the surface of subway bolts is stained with acidic, alkaline and other substances, it can also cause corrosion. During use, as long as we pay attention not to let subway bolts come into contact with these substances, subway bolts will not produce corrosion.