Cowboy button rust caused by the main factors:

(1) temperature and humidity atmospheric temperature and humidity both affect the cowboy button corrosion. First, the atmospheric water vapor content, with the increase in temperature; Second, the high temperature to promote increased corrosion, especially in the humid environment, the higher the temperature, the faster the corrosion rate. When the relative humidity is low, the effect of temperature on corrosion is not obvious, but when the temperature is higher than the critical humidity, the corrosion amount increases sharply.

(2) corrosive gas pollution of corrosive gases in the air, with sulfur dioxide on cowboy button corrosion the most, especially for copper and its alloys particularly harmful. The main source of sulfur dioxide in the atmosphere from the combustion of coal. At the same time, combustion products of carbon dioxide also have corrosion. In the atmosphere around the plant mixed with corrosive gases. Such as hydrogen sulfide, ammonia, hydrochloric acid gas is to promote the metal corrosion factors.

(3) Other factors The atmosphere contains a lot of dust, such as smoke, coal ash, chloride and other acid, alkali, salt particles, and some are corrosive, or condensation of water droplets are corrosion factors, Such as chloride is considered corrosive metal "deadly enemy."

Denim button anti-rust method:

Anti-rust method is to take preventive measures against the causes of metal corrosion. Since the metal corrosion is due to moisture, high temperature, oxygen, sulfur dioxide, chloride, dust and other factors, so rust is necessary to avoid or slow down these factors caused by metal corrosion. Currently used in the anti-rust methods are: in the cowboy button smelting by adding certain elements to improve the resistance of metal corrosion of the external media capacity; corrosion-resistant metal surface treatment, so that the formation of surface conversion layer or surface coating system, in the Metal products can also be used to remove these rust-proof material. This method of rust-proof period of up to several months to several years, the application of more common.