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- Add: Fuyong in shenzhen city, guangdong province town of white stone mansion west industrial zone of A4
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Basic knowledge of anti-rust on spring surface
Shenzhen hon JieWuJin spring factory specializing in the production of spring, precision springs, small home appliance spring, spring, metal stamping, lathe processing, CNC lathe processing precision hardware manufacturers. White stone mansion is located in shenzhen fuyong town industrial park west A4. Contact phone: 13600410733
Shenzhen hon JieWuJin spring factory specializing in the production of spring, precision springs, small home appliance spring, spring, metal stamping, lathe processing, CNC lathe processing precision hardware manufacturers. White stone mansion is located in shenzhen fuyong town industrial park west A4. Contact phone: 13600410733 once
1. In the same temperature, the amount of water vapor in the atmosphere and the percentage of its vapor saturation is called relative humidity. After a relative humidity, the metal corrosion rate is very small, and higher than this relative humidity, the corrosion speed increases abruptly. This relative humidity is called the critical humidity. The critical humidity of many metals is between 50% and 80%, and steel is about 75%. The relative humidity of the atmosphere has the greatest influence on metal rust. When the atmospheric humidity is higher than the critical humidity, the surface of the metal can appear as water film or water bead. If the harmful impurity in the atmosphere is dissolved in the water film and the water bead, it becomes the electrolyte and aggravates the rust.
2. The correlation between temperature and humidity atmospheric temperature and humidity affects metal rust. Here are some of the main conditions: first, the amount of water vapor in the atmosphere increases with increasing temperature. Secondly, the high temperature causes the rust to intensify, especially in humid environment, the higher the temperature, the faster the rust speed. When relative humidity is low, the influence of temperature on rust is not obvious, but when it is higher than the critical humidity, the corrosion volume increases sharply with the increase of temperature. In addition, if there is a temperature difference between the atmosphere and the metal, it will form condensation water on the metal surface with low temperature, which will lead to rust of the metal.
3. Corrosive gases that pollute the air with corrosive gases have the greatest impact on metal corrosion, especially for steel, copper and their alloys. In the atmosphere, sulfur dioxide mainly comes from coal combustion. At the same time, the combustion product carbon dioxide also has a corrosive effect. Corrosive gases are mixed in the atmosphere around the plant. Such as hydrogen sulphide, ammonia, hydrochloric acid and so on are the factors that cause metal rust.
4 contains a large amount of dust in the atmosphere and other factors, such as smoke, soot, chloride and other particles, such as acid, alkali, salt, some is corrosive in itself, or water condensation nuclei, are also corrosion factors, such as chloride corrosion is considered to be the "enemy" of the metal.
1. In the same temperature, the amount of water vapor in the atmosphere and the percentage of its vapor saturation is called relative humidity. After a relative humidity, the metal corrosion rate is very small, and higher than this relative humidity, the corrosion speed increases abruptly. This relative humidity is called the critical humidity. The critical humidity of many metals is between 50% and 80%, and steel is about 75%. The relative humidity of the atmosphere has the greatest influence on metal rust. When the atmospheric humidity is higher than the critical humidity, the surface of the metal can appear as water film or water bead. If the harmful impurity in the atmosphere is dissolved in the water film and the water bead, it becomes the electrolyte and aggravates the rust.
2. The correlation between temperature and humidity atmospheric temperature and humidity affects metal rust. Here are some of the main conditions: first, the amount of water vapor in the atmosphere increases with increasing temperature. Secondly, the high temperature causes the rust to intensify, especially in humid environment, the higher the temperature, the faster the rust speed. When relative humidity is low, the influence of temperature on rust is not obvious, but when it is higher than the critical humidity, the corrosion volume increases sharply with the increase of temperature. In addition, if there is a temperature difference between the atmosphere and the metal, it will form condensation water on the metal surface with low temperature, which will lead to rust of the metal.
3. Corrosive gases that pollute the air with corrosive gases have the greatest impact on metal corrosion, especially for steel, copper and their alloys. In the atmosphere, sulfur dioxide mainly comes from coal combustion. At the same time, the combustion product carbon dioxide also has a corrosive effect. Corrosive gases are mixed in the atmosphere around the plant. Such as hydrogen sulphide, ammonia, hydrochloric acid and so on are the factors that cause metal rust.
4 contains a large amount of dust in the atmosphere and other factors, such as smoke, soot, chloride and other particles, such as acid, alkali, salt, some is corrosive in itself, or water condensation nuclei, are also corrosion factors, such as chloride corrosion is considered to be the "enemy" of the metal.
