Rust prevention methods for galvanized iron wire
2021-03-04
Rust prevention methods for galvanized iron wire
Galvanized iron wire is very commonly used in practical applications. Some people believe that galvanized iron wire will not rust, but this is not the case. Next, the galvanized wire manufacturer will introduce the rust prevention knowledge of galvanized iron wire.
In the hardware products produced by galvanized wire manufacturers, the main problem in storage is preventing corrosion. Metal corrosion is caused by the chemical or electrochemical action of the surrounding medium. According to different media, it is divided into atmospheric corrosion, soil corrosion, seawater corrosion, bacterial corrosion, etc. Atmospheric corrosion is the most common, because metal products are in contact with the atmosphere during processing, transportation, and storage, and there are always conditions for atmospheric corrosion.
The corrosion or discoloration of metals in the atmosphere due to oxygen, water, and other impurities is called rust or corrosion. Rusty metal products, minor ones affect the appearance quality, severely affect the use, and even lead to uselessness, so the metal products that are kept must be properly stored and pay attention to rust prevention.
Galvanized wire manufacturer briefly describes the main factors causing metal rust:
At the same temperature, the percentage of water vapor content in the atmosphere and the water vapor saturation content is called relative humidity. Under a certain relative humidity, the corrosion rate of metal rust preventive oil is very small, but it is higher than the relative humidity, and the corrosion rate suddenly increases. This relative humidity is called critical humidity. The critical humidity of many metals is between 50% and 80%, while the critical humidity of steel is around 75%. Atmospheric relative humidity has the greatest impact on metal corrosion. When the atmospheric humidity is higher than the critical humidity, a water film or water droplets will appear on the metal surface. If the atmosphere contains harmful impurities, it will dissolve in the water film, water droplets, electrolyte, and accelerate corrosion.
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