The galvanized iron wire will inevitably encounter some problems in the procss of galvanizing, so how should we solve it, or how should we prevent it?
Since the standard electrode potential of zinc is -0.762v, which is negative than that of iron, when it is corroded by the medium to form a primary battery, zinc becomes the anode. It itself is dissolved to protect the steel matrix.
The duration of the protective effect of the galvanised layer of the galvanised wire has a lot to do with the thickness. Generally speaking, the thickness of the galvanized layer is only 6-12μm in dry main gas and indoor use, and in the case of poor environmental conditions, the thicknss of the galvanised layer is 20μm, which can reach 50μm. Therefore, environmental factors should be considered when choosing the thickness of the galvanised layer.
After the galvanised layer is passivated, it can naturally form a bright and beautiful color passivation film, which can obviously improve its protective function and decorative properties.
There are many types of zinc plating baths, which can be divided into two categories according to their properties: plating baths and non-plating baths. The galvanizing solution has good dispersibility and covering property, the coating crystal is smooth and meticulous, the operation is simple, the application range is wide, and it has been used in production for a long time. However, due to the presence of toxic substances in the plating solution, the gas escaping during the electroplating process poses great harm to workers' health, and the wastewater must be treated strictly before being discharged.