ZINC COATING
Zinc coating, often referred to as galvanization, is a widely used method of protecting steel and iron from corrosion by applying a layer of zinc to the surface of the metal. The zinc serves as a protective barrier, preventing moisture and other corrosive elements from coming into contact with the underlying metal. In addition to providing a physical barrier, zinc also offers cathodic protection—meaning that if the coating becomes damaged, the zinc will corrode preferentially to the underlying steel, thus protecting the metal from rusting. This process is commonly employed in industries such as construction, automotive, and manufacturing, where steel structures or components are exposed to harsh weather conditions or chemicals.
Zinc coating can be applied through several methods, with the most common being hot-dip galvanizing. In this process, steel or iron is dipped into molten zinc at high temperatures, allowing the metal to form a metallurgical bond with the coating. Another method, known as electrogalvanizing, uses an electrical current to deposit a thin layer of zinc onto the metal’s surface. Both methods provide long-lasting protection, but hot-dip galvanizing tends to offer a thicker, more durable coating that is ideal for outdoor or heavy-duty applications. Zinc-coated metals are essential in preventing rust and corrosion, helping to extend the life of products such as pipes, structural beams, fasteners, and automotive parts, making them a valuable part of industries that rely on the durability of metal components.