sähkösinkitystä

Sähkösinkitys, also known as electrogalvanizing or electroplating with zinc, is a surface finishing process used to protect metal components from corrosion. It involves immersing a metal part, typically steel, into an electrolytic solution containing zinc ions. An electric current is then passed through the solution, causing zinc to deposit evenly onto the surface of the immersed object. This creates a thin, adherent layer of zinc that acts as a sacrificial barrier. If the coating is scratched and the base metal is exposed, the zinc will corrode preferentially, sacrificing itself to protect the underlying steel.

The sähkösinkitys process offers several advantages. It provides excellent corrosion resistance, especially in mild to moderate environments. The resulting coating is smooth and aesthetically pleasing, with a bright, silvery finish. It is also a cost-effective method for applying a protective zinc layer, particularly for smaller parts or when a very thick coating is not required. The process is highly controllable, allowing for precise thickness variations depending on the application's needs.

Applications for sähkösinkitystä are widespread. It is commonly used for fasteners like screws, bolts, and nuts, as well as for small hardware components, electrical connectors, and automotive parts. The process is well-suited for mass production due to its efficiency and the ability to process large batches of parts simultaneously. Environmental considerations are also important, with ongoing efforts to optimize bath chemistry and wastewater treatment for sustainability.