Do you really know the importance of galvanization of steel sheets? What are the characteristics of its different types of manufacturing? For construction, architecture or renovation companies, knowing how to distinguish the industrial application in the use of each model is essential. In this entry we clarify all doubts. Keep reading.

What is galvanization?

It is a process through which protects steel from corrosion. It consists of applying a layer of zinc on the surface of the metal, creating a protective barrier that prevents direct contact with corrosive agents. This is the case, for example, of humidity and chemicals.

The crucial relevance of zinc plating lies in its ability to extend the life of wrought iron. That is, the zinc acts as a sacrificial material, corroding in place of the steel. Thus prevents rust formation, the weakening of the structure is avoided and increases protection against degradation.

Types of galvanization

For manufacture zinc-plated steel sheets there are different methods. It is advisable that we detail them separately, differentiating them according to the application, budget and technical specifications.

hot dip galvanization

In this process the sheets are immersed in a zinc bath molten at high temperatures, usually around 430 °C to 450 °C. A thermal difference that determines the thickness, characteristics and coating of the different surfaces to be treated. During immersion, the zinc adheres to the surface of the steel, forming a strong, firm, protective layer on the base metal. What do you obtain? The ideal coating for applications and elements exposed to the weather or in hostile environments. The hot galvanization It is common to use it for the manufacture of metal structures, fence posts, pipes and construction components.

However, a technical manufacturing variant must be distinguished: hot black sheet metal. A product obtained by reducing roughing, in a continuous or semi-continuous train, which, without a doubt, is that of increased industrial production and consumption. In fact, it is used in practically all sectors. In our case, it is supplied in its final state of lamination or stripping, even protecting the material with a layer of oil added to both sides. On the contrary, if you want to purchase it without oil, it is the user himself who must assume the risks of oxidation.

Cold galvanization

Manufacturing is carried out by electrodeposition at room temperature. The common development of this laminate involves stripping a coil to remove impurities, oxides and scale. Then, in a tandem train, the desired thickness is adjusted and the coils are subjected to heat treatment to regenerate their crystalline structure. In the end, they are hardened through tempering evolution.

This is the process what we do in Texar Ferros to ensure the quality and resistance of cold rolled material. It is commonly used in the manufacture of small parts, nails, screws and everyday objects. Those who require a moderate corrosion protection without altering the original dimensions of the material.

Electrolytic zinc plating

Here the sheet metal coating It is produced by a controlled chemical reaction in an electrolyte solution. steels that add to the physical barrier of the coating the galvanic action of zinc. An ideal method for applications requiring an aesthetic finish and precise fit, such as electronic components, automotive parts and decorative objects. The electrolytic galvanization It is used when minimal corrosion protection is needed and appearance and dimensional accuracy are valued.

Advantages of galvanizing steel sheets

Zinc plating provides numerous benefits as a result of protecting iron alloy sheets. Don't forget that this process is essential in the construction of infrastructure. Furthermore, essential in bridges and buildings, as well as in the manufacture of metal components for pipes and fences. In general, these are the three main benefits at the industrial level:

  • Corrosion resistance. When galvanizing the corrosive effect is effectively avoided. Because? Because there is no direct contact between the steel and the different external agents that can damage its surface.
  • Durability. Likewise, the zinc layer applied contributes significantly to the durability of the materials, avoiding premature degradation. Consequently, it reduces long-term maintenance costs and contributes to the sustainability of structures made with ferrous alloy.
  • Structural stability. El galvanic coating helps maintain integrity structural of the material over time. You must take it into account, It is a crucial factor in multiple applications where resistance and stability are essential.

Considerations when selecting the type of galvanization

When choose the type of zinc plating Several key factors must be carefully considered. Especially the application environment. Remember that environmental conditions, such as humidity or exposure to corrosive chemicals, require a more robust galvanic protection.

The budget plays an essential role in this decision. Different coating methods have variable costs, so it is Crucial to evaluate the balance between protection and expense.

Likewise, the technical specifications must be rigorously met. This involves the required thickness of the zinc layer, which directly impacts the durability of the coating. Other aspects, such as aesthetics, ease of maintenance and compatibility with other materials can also influence the choice.

In summary, knowing how to distinguish and select the appropriate manufacturing for the galvanization of steel sheets is essential. You have to choose an option that fits the budget without compromising the quality of the coating. Please note that protection, durability and optimal performance depend on high quality lamination. Precisely what we offer in Texar FerrosContact us, we are happy to assist you.