The requirements for the quality of galvanized channel steel include dimensional accuracy, internal and external surface quality (smoothness), and mechanical properties. Some galvanized channel steels also have additional special requirements to ensure special usage conditions (such as corrosion resistance requirements for stainless galvanized channel steels, microstructure requirements for bearing galvanized channel steels or high-pressure boiler pipes, etc.). The quality requirements for various galvanized channel steels are specified in national and departmental standards.
The use of galvanized channel steel on the market is becoming increasingly widespread, and the problem is becoming increasingly apparent. The relatively common drawback is decarbonization. Many friends find that when decarburization occurs in galvanized channel steel, they do not know how to solve it. Today, we will introduce how to solve the decarburization problem in galvanized channel steel. We hope it can bring help to everyone!
Under normal circumstances, decarburization occurs on the surface of galvanized channel steel due to the contact between the steel wire and air during the melting of lead, resulting in both decarburization and oxidation. This is mainly because the contact between solid carbon in iron and gases such as water vapor, oxygen, and carbon dioxide in the air causes serious decarburization on the surface of galvanized channel steel. There are two ways to solve the decarburization problem on the surface of galvanized channel steel.