Zinkbeläggningen

Zinkbeläggningen, commonly known as galvanization, is a protective coating process applied to ferrous metals, primarily steel, to prevent corrosion. This is achieved by immersing the metal component in a bath of molten zinc. The zinc then forms a metallurgical bond with the iron, creating a barrier that effectively shields the underlying metal from the elements.

There are several methods for applying zinc coatings, with hot-dip galvanizing being the most prevalent. Other techniques include electrogalvanizing, sherardizing, and mechanical plating, each offering different characteristics and applications. The thickness and uniformity of the zinc layer are crucial for its protective capabilities.

The corrosion resistance provided by a zinc coating is multifaceted. It offers a sacrificial protection mechanism where the zinc corrodes preferentially to the steel, even if the coating is scratched or damaged. This galvanic action ensures that the steel remains protected as long as there is zinc present to corrode. Furthermore, the zinc layer can also provide a physical barrier, preventing moisture and oxygen from reaching the steel surface.

Zinkbeläggningen is widely used across various industries, including construction, automotive, infrastructure, and manufacturing. It is applied to products such as structural steel, pipes, fasteners, and electrical components. The durability and cost-effectiveness of zinc coatings make them a popular choice for extending the lifespan of steel products and reducing maintenance costs. The process also contributes to the sustainability of steel structures by enhancing their longevity.