anti-corrosion mechanism of Color Coated Steel Coils
Metal anticorrosion is a system worthy of study. Between 1790 and 1834, a series of phenomena and laws were proposed by scientists such as Cayle, de la Reeve, and Faraday. At the beginning of the 20th century, metal anticorrosion began to become an independent science. During the First and Second World Wars, in order to avoid excessive loss of weapons during ocean transportation, metal rust-proof packaging standards came into being. At the same time, in order to solve the corrosion problem of weapons in high-temperature and humid areas in Southeast Asia, the P series standards were also formulated for anti-rust materials, which promoted the development of metal anti-rust technology. As these technologies are transferred from military to civilian use, the metal anti-rust research system has also become more Complete. Today we will discuss what is the anti-corrosion mechanism of Color Coated Steel Coils based on the theoretical knowledge of metal anti-rust?
Generally, the corrosion classification of metal materials can be divided into these types.
(1) According to the corrosion environment: dry corrosion and wet corrosion;
(2) According to the corrosion mechanism: chemical corrosion, electrochemical corrosion, and physical corrosion;
(3) According to the type of corrosion form: pitting corrosion, stress corrosion fracture;
(4) Metal material points: common and practical metals in the "Metal Manual".
(5) According to application scope: It is actually a special application classified according to corrosive environment.
Among them, dry corrosion in point (1) belongs to the chemical mechanism, while wet corrosion belongs to the electrochemical mechanism. Points (3) to (5) are all further classifications of points (1) and (2). The anti-corrosion mechanism of Color Coated Steel Coils we are going to discuss today is to use the coating to isolate the substrate from the corrosive medium and prevent chemical or electrochemical reactions on the surface of the substrate.
Therefore, after long-term practice and combined with the theory of the anti-corrosion mechanism of Color Coated Steel Coils mentioned above, the following countermeasures can be taken.
① When selecting the substrate material of Color Coated Steel Coils, choose one that is resistant to atmospheric corrosion as much as possible;
②The structural design of Color Coated Steel Coils should try to avoid gaps, depressions and other places that are prone to water accumulation and cause corrosion and breakage;
③Change the composition of Color Coated Steel Coils paint and add corrosion inhibitors to inhibit the corrosion process;
④Color Coated Steel Coils should be rust-proofed before packaging. Keep them dry and clean during storage:
⑤ Use high-quality coating to protect the surface of Color Coated Steel Coils.
Welcome to consult and purchase!
The Color Coated Steel Coil produced by Li Cheung Steel always follows the above anti-corrosion measures from substrate to coating selection to extend the service life of each batch of Color Coated Steel Coils. Welcome to consult and purchase!
