Causes of rust on barbed wire and how to prevent it

Ordinary electroplated galvanized barbed wire will develop rust after a period of use, which seriously affects its appearance. However, the degree of rusting and the service life of electroplated galvanized barbed wire are affected by many factors. Below, I will explain the reasons for metal rusting so that customers can consider these two factors when asking how long electroplated galvanized barbed wire will last without rusting.

Main factors causing metal rusting:

(1) Relative humidity: At the same temperature, the percentage of water vapor content in the atmosphere to its saturation point is called relative humidity. Below a certain relative humidity, the rusting rate of metal is very small, while above this relative humidity, the rusting rate increases sharply. This relative humidity is called the critical humidity. The critical humidity for many metals is between 50% and 80%, and for steel it is about 75%. The effect of atmospheric relative humidity on metal corrosion: When the atmospheric humidity is higher than the critical humidity, a water film or water droplets appear on the metal surface. If harmful impurities in the atmosphere dissolve in the water film or water droplets, they form an electrolyte, which exacerbates corrosion. (2) Air Temperature and Humidity: Atmospheric temperature and humidity are related in their influence on metal corrosion. This is mainly due to the following: First, the water vapor content in the atmosphere increases with rising temperature. Second, high temperatures accelerate corrosion, especially in humid environments; the higher the temperature, the faster the corrosion. At low relative humidity, the effect of temperature on corrosion is not very significant, but above the critical humidity level, the amount of corrosion increases sharply with rising temperature. Additionally, if there is a temperature difference between the atmosphere and the metal, condensation will form on the cooler metal surface, also leading to rust.

Methods for preventing rust on barbed wire include plastic coating and using hot-dip galvanized and stainless steel raw materials, which can greatly extend the service life of the barbed wire.