Galvanized wire is made of high-quality low carbon steel wire rod, which is hot galvanized after drawing, pickling, rust removal, high temperature annealing. It is processed by cooling and other technological processes. Galvanized wire is divided into hot galvanized wire and galvanized wire. The galvanized iron wire has good toughness and elasticity, and the maximum zinc content can reach 300g/m2. It has the characteristics of thick zinc coating and strong corrosion resistance.
What should be paid attention to before galvanizing the galvanized wire?
Compared with other galvanizing processes, the requirements for cleaning low-carbon steel wire before galvanizing are low. However, in the current trend of constantly demanding to improve the quality level of the zinc coating, some small pollutants brought into the plating bath have obviously become harmful. Because cleaning the zinc coating wastes a lot of time and reduces the output, it is very important to properly clean the substrate and effectively rinse it before electroplating.
Defects such as surface facial mask layer and surface inclusions can be found and treated by conventional technology from the external surface of the deposited layer of galvanized wire before galvanizing; Excessive foam is formed by bringing soap and saponifiable fat surfactant into the bath. A moderate rate of foam formation may be harmless. A large number of small congeneric particles in the tank liquid can stabilize the foam layer. It is effective to remove surface active substances by mat forming with activated carbon or make the foam less stable by filtration; Other measures should also be taken to minimize the introduction of surfactant. The introduction of organic matters can significantly reduce the electroplating speed. Although the chemical formula is conducive to high deposition rate, the coating thickness can not meet the requirements after organic substances are brought in, so activated carbon can be used to treat the bath solution
Post time: Oct-18-2022